lcode-real.json

[
{
    "Number": "0001", 
    "Level": 1, 
    "Title": "Two Sum", 
    "Url": "https://leetcode.com/problems/two-sum", 
    "Tags": [
        "Two-Sum", 
        "Two-Pointer", 
        "HashMap"
    ], 
    "Memo": "你好"
},
{
    "Number": "0002", 
    "Level": 2, 
    "Title": "Add Two Numbers", 
    "Url": "https://leetcode.com/problems/add-two-numbers", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0003", 
    "Level": 2, 
    "Title": "Longest Substring Without Repeating Characters", 
    "Url": "https://leetcode.com/problems/longest-substring-without-repeating-characters", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0004", 
    "Level": 3, 
    "Title": "Median of Two Sorted Arrays", 
    "Url": "https://leetcode.com/problems/median-of-two-sorted-arrays", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0005", 
    "Level": 2, 
    "Title": "Longest Palindromic Substring", 
    "Url": "https://leetcode.com/problems/longest-palindromic-substring", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0009", 
    "Level": 1, 
    "Title": "Palindrome Number", 
    "Url": "https://leetcode.com/problems/palindrome-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0010", 
    "Level": 3, 
    "Title": "Regular Expression Matching", 
    "Url": "https://leetcode.com/problems/regular-expression-matching", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0011", 
    "Level": 2, 
    "Title": "Container With Most Water", 
    "Url": "https://leetcode.com/problems/container-with-most-water", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0014", 
    "Level": 1, 
    "Title": "Longest Common Prefix", 
    "Url": "https://leetcode.com/problems/longest-common-prefix", 
    "Tags": [
        "String"
    ], 
    "Memo": ""
},
{
    "Number": "0015", 
    "Level": 2, 
    "Title": "3Sum", 
    "Url": "https://leetcode.com/problems/3sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0016", 
    "Level": 2, 
    "Title": "3Sum Closest", 
    "Url": "https://leetcode.com/problems/3sum-closest", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0017", 
    "Level": 2, 
    "Title": "Letter Combinations of a Phone Number", 
    "Url": "https://leetcode.com/problems/letter-combinations-of-a-phone-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0018", 
    "Level": 2, 
    "Title": "4Sum", 
    "Url": "https://leetcode.com/problems/4sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0019", 
    "Level": 2, 
    "Title": "Remove Nth Node From End of List", 
    "Url": "https://leetcode.com/problems/remove-nth-node-from-end-of-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0020", 
    "Level": 1, 
    "Title": "Valid Parentheses", 
    "Url": "https://leetcode.com/problems/valid-parentheses", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0021", 
    "Level": 1, 
    "Title": "Merge Two Sorted Lists", 
    "Url": "https://leetcode.com/problems/merge-two-sorted-lists", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0022", 
    "Level": 2, 
    "Title": "Generate Parentheses", 
    "Url": "https://leetcode.com/problems/generate-parentheses", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0023", 
    "Level": 3, 
    "Title": "Merge k Sorted Lists", 
    "Url": "https://leetcode.com/problems/merge-k-sorted-lists", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0024", 
    "Level": 2, 
    "Title": "Swap Nodes in Pairs", 
    "Url": "https://leetcode.com/problems/swap-nodes-in-pairs", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0029", 
    "Level": 2, 
    "Title": "Divide Two Integers", 
    "Url": "https://leetcode.com/problems/divide-two-integers", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0031", 
    "Level": 2, 
    "Title": "Next Permutation", 
    "Url": "https://leetcode.com/problems/next-permutation", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0032", 
    "Level": 3, 
    "Title": "Longest Valid Parentheses", 
    "Url": "https://leetcode.com/problems/longest-valid-parentheses", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0033", 
    "Level": 2, 
    "Title": "Search in Rotated Sorted Array", 
    "Url": "https://leetcode.com/problems/search-in-rotated-sorted-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0034", 
    "Level": 2, 
    "Title": "Find First and Last Position of Element in Sorted Array", 
    "Url": "https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0035", 
    "Level": 1, 
    "Title": "Search Insert Position", 
    "Url": "https://leetcode.com/problems/search-insert-position", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0036", 
    "Level": 2, 
    "Title": "Valid Sudoku", 
    "Url": "https://leetcode.com/problems/valid-sudoku", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0037", 
    "Level": 3, 
    "Title": "Sudoku Solver", 
    "Url": "https://leetcode.com/problems/sudoku-solver", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0039", 
    "Level": 2, 
    "Title": "Combination Sum", 
    "Url": "https://leetcode.com/problems/combination-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0040", 
    "Level": 2, 
    "Title": "Combination Sum II", 
    "Url": "https://leetcode.com/problems/combination-sum-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0042", 
    "Level": 3, 
    "Title": "Trapping Rain Water", 
    "Url": "https://leetcode.com/problems/trapping-rain-water", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0044", 
    "Level": 3, 
    "Title": "Wildcard Matching", 
    "Url": "https://leetcode.com/problems/wildcard-matching", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0045", 
    "Level": 2, 
    "Title": "Jump Game II", 
    "Url": "https://leetcode.com/problems/jump-game-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0046", 
    "Level": 2, 
    "Title": "Permutations", 
    "Url": "https://leetcode.com/problems/permutations", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0047", 
    "Level": 2, 
    "Title": "Permutations II", 
    "Url": "https://leetcode.com/problems/permutations-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0048", 
    "Level": 2, 
    "Title": "Rotate Image", 
    "Url": "https://leetcode.com/problems/rotate-image", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0049", 
    "Level": 2, 
    "Title": "Group Anagrams", 
    "Url": "https://leetcode.com/problems/group-anagrams", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0050", 
    "Level": 2, 
    "Title": "Pow(x, n)", 
    "Url": "https://leetcode.com/problems/powx-n", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0051", 
    "Level": 3, 
    "Title": "N-Queens", 
    "Url": "https://leetcode.com/problems/n-queens", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0052", 
    "Level": 3, 
    "Title": "N-Queens II", 
    "Url": "https://leetcode.com/problems/n-queens-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0053", 
    "Level": 1, 
    "Title": "Maximum Subarray", 
    "Url": "https://leetcode.com/problems/maximum-subarray", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0054", 
    "Level": 2, 
    "Title": "Spiral Matrix", 
    "Url": "https://leetcode.com/problems/spiral-matrix", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0055", 
    "Level": 2, 
    "Title": "Jump Game", 
    "Url": "https://leetcode.com/problems/jump-game", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0056", 
    "Level": 2, 
    "Title": "Merge Intervals", 
    "Url": "https://leetcode.com/problems/merge-intervals", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0057", 
    "Level": 2, 
    "Title": "Insert Interval", 
    "Url": "https://leetcode.com/problems/insert-interval", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0059", 
    "Level": 2, 
    "Title": "Spiral Matrix II", 
    "Url": "https://leetcode.com/problems/spiral-matrix-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0061", 
    "Level": 2, 
    "Title": "Rotate List", 
    "Url": "https://leetcode.com/problems/rotate-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0062", 
    "Level": 2, 
    "Title": "Unique Paths", 
    "Url": "https://leetcode.com/problems/unique-paths", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0063", 
    "Level": 2, 
    "Title": "Unique Paths II", 
    "Url": "https://leetcode.com/problems/unique-paths-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0064", 
    "Level": 2, 
    "Title": "Minimum Path Sum", 
    "Url": "https://leetcode.com/problems/minimum-path-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0068", 
    "Level": 3, 
    "Title": "Text Justification", 
    "Url": "https://leetcode.com/problems/text-justification", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0069", 
    "Level": 1, 
    "Title": "Sqrt(x)", 
    "Url": "https://leetcode.com/problems/sqrtx", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0070", 
    "Level": 1, 
    "Title": "Climbing Stairs", 
    "Url": "https://leetcode.com/problems/climbing-stairs", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0071", 
    "Level": 2, 
    "Title": "Simplify Path", 
    "Url": "https://leetcode.com/problems/simplify-path", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0073", 
    "Level": 2, 
    "Title": "Set Matrix Zeroes", 
    "Url": "https://leetcode.com/problems/set-matrix-zeroes", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0074", 
    "Level": 2, 
    "Title": "Search a 2D Matrix", 
    "Url": "https://leetcode.com/problems/search-a-2d-matrix", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0075", 
    "Level": 2, 
    "Title": "Sort Colors", 
    "Url": "https://leetcode.com/problems/sort-colors", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0077", 
    "Level": 2, 
    "Title": "Combinations", 
    "Url": "https://leetcode.com/problems/combinations", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0078", 
    "Level": 2, 
    "Title": "Subsets", 
    "Url": "https://leetcode.com/problems/subsets", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0079", 
    "Level": 2, 
    "Title": "Word Search", 
    "Url": "https://leetcode.com/problems/word-search", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0080", 
    "Level": 2, 
    "Title": "Remove Duplicates from Sorted Array II", 
    "Url": "https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0081", 
    "Level": 2, 
    "Title": "Search in Rotated Sorted Array II", 
    "Url": "https://leetcode.com/problems/search-in-rotated-sorted-array-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0082", 
    "Level": 2, 
    "Title": "Remove Duplicates from Sorted List II", 
    "Url": "https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0083", 
    "Level": 1, 
    "Title": "Remove Duplicates from Sorted List", 
    "Url": "https://leetcode.com/problems/remove-duplicates-from-sorted-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0084", 
    "Level": 3, 
    "Title": "Largest Rectangle in Histogram", 
    "Url": "https://leetcode.com/problems/largest-rectangle-in-histogram", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0085", 
    "Level": 3, 
    "Title": "Maximal Rectangle", 
    "Url": "https://leetcode.com/problems/maximal-rectangle", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0086", 
    "Level": 2, 
    "Title": "Partition List", 
    "Url": "https://leetcode.com/problems/partition-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0088", 
    "Level": 1, 
    "Title": "Merge Sorted Array", 
    "Url": "https://leetcode.com/problems/merge-sorted-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0089", 
    "Level": 2, 
    "Title": "Gray Code", 
    "Url": "https://leetcode.com/problems/gray-code", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0090", 
    "Level": 2, 
    "Title": "Subsets II", 
    "Url": "https://leetcode.com/problems/subsets-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0092", 
    "Level": 2, 
    "Title": "Reverse Linked List II", 
    "Url": "https://leetcode.com/problems/reverse-linked-list-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0094", 
    "Level": 1, 
    "Title": "Binary Tree Inorder Traversal", 
    "Url": "https://leetcode.com/problems/binary-tree-inorder-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0095", 
    "Level": 2, 
    "Title": "Unique Binary Search Trees II", 
    "Url": "https://leetcode.com/problems/unique-binary-search-trees-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0096", 
    "Level": 2, 
    "Title": "Unique Binary Search Trees", 
    "Url": "https://leetcode.com/problems/unique-binary-search-trees", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0098", 
    "Level": 2, 
    "Title": "Validate Binary Search Tree", 
    "Url": "https://leetcode.com/problems/validate-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0099", 
    "Level": 2, 
    "Title": "Recover Binary Search Tree", 
    "Url": "https://leetcode.com/problems/recover-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0100", 
    "Level": 1, 
    "Title": "Same Tree", 
    "Url": "https://leetcode.com/problems/same-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0101", 
    "Level": 1, 
    "Title": "Symmetric Tree", 
    "Url": "https://leetcode.com/problems/symmetric-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0102", 
    "Level": 2, 
    "Title": "Binary Tree Level Order Traversal", 
    "Url": "https://leetcode.com/problems/binary-tree-level-order-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0103", 
    "Level": 2, 
    "Title": "Binary Tree Zigzag Level Order Traversal", 
    "Url": "https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0104", 
    "Level": 1, 
    "Title": "Maximum Depth of Binary Tree", 
    "Url": "https://leetcode.com/problems/maximum-depth-of-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0105", 
    "Level": 2, 
    "Title": "Construct Binary Tree from Preorder and Inorder Traversal", 
    "Url": "https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0106", 
    "Level": 2, 
    "Title": "Construct Binary Tree from Inorder and Postorder Traversal", 
    "Url": "https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0107", 
    "Level": 2, 
    "Title": "Binary Tree Level Order Traversal II", 
    "Url": "https://leetcode.com/problems/binary-tree-level-order-traversal-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0108", 
    "Level": 1, 
    "Title": "Convert Sorted Array to Binary Search Tree", 
    "Url": "https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0109", 
    "Level": 2, 
    "Title": "Convert Sorted List to Binary Search Tree", 
    "Url": "https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0110", 
    "Level": 1, 
    "Title": "Balanced Binary Tree", 
    "Url": "https://leetcode.com/problems/balanced-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0111", 
    "Level": 1, 
    "Title": "Minimum Depth of Binary Tree", 
    "Url": "https://leetcode.com/problems/minimum-depth-of-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0112", 
    "Level": 1, 
    "Title": "Path Sum", 
    "Url": "https://leetcode.com/problems/path-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0113", 
    "Level": 2, 
    "Title": "Path Sum II", 
    "Url": "https://leetcode.com/problems/path-sum-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0114", 
    "Level": 2, 
    "Title": "Flatten Binary Tree to Linked List", 
    "Url": "https://leetcode.com/problems/flatten-binary-tree-to-linked-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0116", 
    "Level": 2, 
    "Title": "Populating Next Right Pointers in Each Node", 
    "Url": "https://leetcode.com/problems/populating-next-right-pointers-in-each-node", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0117", 
    "Level": 2, 
    "Title": "Populating Next Right Pointers in Each Node II", 
    "Url": "https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0118", 
    "Level": 1, 
    "Title": "Pascal's Triangle", 
    "Url": "https://leetcode.com/problems/pascals-triangle", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0119", 
    "Level": 1, 
    "Title": "Pascal's Triangle II", 
    "Url": "https://leetcode.com/problems/pascals-triangle-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0120", 
    "Level": 2, 
    "Title": "Triangle", 
    "Url": "https://leetcode.com/problems/triangle", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0121", 
    "Level": 1, 
    "Title": "Best Time to Buy and Sell Stock", 
    "Url": "https://leetcode.com/problems/best-time-to-buy-and-sell-stock", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0122", 
    "Level": 2, 
    "Title": "Best Time to Buy and Sell Stock II", 
    "Url": "https://leetcode.com/problems/best-time-to-buy-and-sell-stock-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0123", 
    "Level": 3, 
    "Title": "Best Time to Buy and Sell Stock III", 
    "Url": "https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0124", 
    "Level": 3, 
    "Title": "Binary Tree Maximum Path Sum", 
    "Url": "https://leetcode.com/problems/binary-tree-maximum-path-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0125", 
    "Level": 1, 
    "Title": "Valid Palindrome", 
    "Url": "https://leetcode.com/problems/valid-palindrome", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0126", 
    "Level": 3, 
    "Title": "Word Ladder II", 
    "Url": "https://leetcode.com/problems/word-ladder-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0127", 
    "Level": 3, 
    "Title": "Word Ladder", 
    "Url": "https://leetcode.com/problems/word-ladder", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0128", 
    "Level": 2, 
    "Title": "Longest Consecutive Sequence", 
    "Url": "https://leetcode.com/problems/longest-consecutive-sequence", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0129", 
    "Level": 2, 
    "Title": "Sum Root to Leaf Numbers", 
    "Url": "https://leetcode.com/problems/sum-root-to-leaf-numbers", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0130", 
    "Level": 2, 
    "Title": "Surrounded Regions", 
    "Url": "https://leetcode.com/problems/surrounded-regions", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0131", 
    "Level": 2, 
    "Title": "Palindrome Partitioning", 
    "Url": "https://leetcode.com/problems/palindrome-partitioning", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0133", 
    "Level": 2, 
    "Title": "Clone Graph", 
    "Url": "https://leetcode.com/problems/clone-graph", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0134", 
    "Level": 2, 
    "Title": "Gas Station", 
    "Url": "https://leetcode.com/problems/gas-station", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0136", 
    "Level": 1, 
    "Title": "Single Number", 
    "Url": "https://leetcode.com/problems/single-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0137", 
    "Level": 2, 
    "Title": "Single Number II", 
    "Url": "https://leetcode.com/problems/single-number-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0138", 
    "Level": 2, 
    "Title": "Copy List with Random Pointer", 
    "Url": "https://leetcode.com/problems/copy-list-with-random-pointer", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0139", 
    "Level": 2, 
    "Title": "Word Break", 
    "Url": "https://leetcode.com/problems/word-break", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0141", 
    "Level": 1, 
    "Title": "Linked List Cycle", 
    "Url": "https://leetcode.com/problems/linked-list-cycle", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0142", 
    "Level": 2, 
    "Title": "Linked List Cycle II", 
    "Url": "https://leetcode.com/problems/linked-list-cycle-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0144", 
    "Level": 1, 
    "Title": "Binary Tree Preorder Traversal", 
    "Url": "https://leetcode.com/problems/binary-tree-preorder-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0146", 
    "Level": 2, 
    "Title": "LRU Cache", 
    "Url": "https://leetcode.com/problems/lru-cache", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0148", 
    "Level": 2, 
    "Title": "Sort List", 
    "Url": "https://leetcode.com/problems/sort-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0150", 
    "Level": 2, 
    "Title": "Evaluate Reverse Polish Notation", 
    "Url": "https://leetcode.com/problems/evaluate-reverse-polish-notation", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0151", 
    "Level": 2, 
    "Title": "Reverse Words in a String", 
    "Url": "https://leetcode.com/problems/reverse-words-in-a-string", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0152", 
    "Level": 2, 
    "Title": "Maximum Product Subarray", 
    "Url": "https://leetcode.com/problems/maximum-product-subarray", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0153", 
    "Level": 2, 
    "Title": "Find Minimum in Rotated Sorted Array", 
    "Url": "https://leetcode.com/problems/find-minimum-in-rotated-sorted-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0155", 
    "Level": 1, 
    "Title": "Min Stack", 
    "Url": "https://leetcode.com/problems/min-stack", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0159", 
    "Level": 2, 
    "Title": "Longest Substring with At Most Two Distinct Characters", 
    "Url": "https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0160", 
    "Level": 1, 
    "Title": "Intersection of Two Linked Lists", 
    "Url": "https://leetcode.com/problems/intersection-of-two-linked-lists", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0161", 
    "Level": 2, 
    "Title": "One Edit Distance", 
    "Url": "https://leetcode.com/problems/one-edit-distance", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0162", 
    "Level": 2, 
    "Title": "Find Peak Element", 
    "Url": "https://leetcode.com/problems/find-peak-element", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0167", 
    "Level": 2, 
    "Title": "Two Sum II - Input Array Is Sorted", 
    "Url": "https://leetcode.com/problems/two-sum-ii-input-array-is-sorted", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0168", 
    "Level": 1, 
    "Title": "Excel Sheet Column Title", 
    "Url": "https://leetcode.com/problems/excel-sheet-column-title", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0170", 
    "Level": 1, 
    "Title": "Two Sum III - Data structure design", 
    "Url": "https://leetcode.com/problems/two-sum-iii-data-structure-design", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0171", 
    "Level": 1, 
    "Title": "Excel Sheet Column Number", 
    "Url": "https://leetcode.com/problems/excel-sheet-column-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0173", 
    "Level": 2, 
    "Title": "Binary Search Tree Iterator", 
    "Url": "https://leetcode.com/problems/binary-search-tree-iterator", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0179", 
    "Level": 2, 
    "Title": "Largest Number", 
    "Url": "https://leetcode.com/problems/largest-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0187", 
    "Level": 2, 
    "Title": "Repeated DNA Sequences", 
    "Url": "https://leetcode.com/problems/repeated-dna-sequences", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0189", 
    "Level": 2, 
    "Title": "Rotate Array", 
    "Url": "https://leetcode.com/problems/rotate-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0191", 
    "Level": 1, 
    "Title": "Number of 1 Bits", 
    "Url": "https://leetcode.com/problems/number-of-1-bits", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0198", 
    "Level": 2, 
    "Title": "House Robber", 
    "Url": "https://leetcode.com/problems/house-robber", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0199", 
    "Level": 2, 
    "Title": "Binary Tree Right Side View", 
    "Url": "https://leetcode.com/problems/binary-tree-right-side-view", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0200", 
    "Level": 2, 
    "Title": "Number of Islands", 
    "Url": "https://leetcode.com/problems/number-of-islands", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0206", 
    "Level": 1, 
    "Title": "Reverse Linked List", 
    "Url": "https://leetcode.com/problems/reverse-linked-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0207", 
    "Level": 2, 
    "Title": "Course Schedule", 
    "Url": "https://leetcode.com/problems/course-schedule", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0208", 
    "Level": 2, 
    "Title": "Implement Trie (Prefix Tree)", 
    "Url": "https://leetcode.com/problems/implement-trie-prefix-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0209", 
    "Level": 2, 
    "Title": "Minimum Size Subarray Sum", 
    "Url": "https://leetcode.com/problems/minimum-size-subarray-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0210", 
    "Level": 2, 
    "Title": "Course Schedule II", 
    "Url": "https://leetcode.com/problems/course-schedule-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0211", 
    "Level": 2, 
    "Title": "Design Add and Search Words Data Structure", 
    "Url": "https://leetcode.com/problems/design-add-and-search-words-data-structure", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0212", 
    "Level": 3, 
    "Title": "Word Search II", 
    "Url": "https://leetcode.com/problems/word-search-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0215", 
    "Level": 2, 
    "Title": "Kth Largest Element in an Array", 
    "Url": "https://leetcode.com/problems/kth-largest-element-in-an-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0216", 
    "Level": 2, 
    "Title": "Combination Sum III", 
    "Url": "https://leetcode.com/problems/combination-sum-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0221", 
    "Level": 2, 
    "Title": "Maximal Square", 
    "Url": "https://leetcode.com/problems/maximal-square", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0222", 
    "Level": 2, 
    "Title": "Count Complete Tree Nodes", 
    "Url": "https://leetcode.com/problems/count-complete-tree-nodes", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0223", 
    "Level": 2, 
    "Title": "Rectangle Area", 
    "Url": "https://leetcode.com/problems/rectangle-area", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0224", 
    "Level": 3, 
    "Title": "Basic Calculator", 
    "Url": "https://leetcode.com/problems/basic-calculator", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0225", 
    "Level": 1, 
    "Title": "Implement Stack using Queues", 
    "Url": "https://leetcode.com/problems/implement-stack-using-queues", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0226", 
    "Level": 1, 
    "Title": "Invert Binary Tree", 
    "Url": "https://leetcode.com/problems/invert-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0227", 
    "Level": 2, 
    "Title": "Basic Calculator II", 
    "Url": "https://leetcode.com/problems/basic-calculator-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0228", 
    "Level": 1, 
    "Title": "Summary Ranges", 
    "Url": "https://leetcode.com/problems/summary-ranges", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0230", 
    "Level": 2, 
    "Title": "Kth Smallest Element in a BST", 
    "Url": "https://leetcode.com/problems/kth-smallest-element-in-a-bst", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0232", 
    "Level": 1, 
    "Title": "Implement Queue using Stacks", 
    "Url": "https://leetcode.com/problems/implement-queue-using-stacks", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0234", 
    "Level": 1, 
    "Title": "Palindrome Linked List", 
    "Url": "https://leetcode.com/problems/palindrome-linked-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0235", 
    "Level": 1, 
    "Title": "Lowest Common Ancestor of a Binary Search Tree", 
    "Url": "https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0236", 
    "Level": 2, 
    "Title": "Lowest Common Ancestor of a Binary Tree", 
    "Url": "https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0237", 
    "Level": 1, 
    "Title": "Delete Node in a Linked List", 
    "Url": "https://leetcode.com/problems/delete-node-in-a-linked-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0238", 
    "Level": 2, 
    "Title": "Product of Array Except Self", 
    "Url": "https://leetcode.com/problems/product-of-array-except-self", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0239", 
    "Level": 3, 
    "Title": "Sliding Window Maximum", 
    "Url": "https://leetcode.com/problems/sliding-window-maximum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0240", 
    "Level": 2, 
    "Title": "Search a 2D Matrix II", 
    "Url": "https://leetcode.com/problems/search-a-2d-matrix-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0241", 
    "Level": 2, 
    "Title": "Different Ways to Add Parentheses", 
    "Url": "https://leetcode.com/problems/different-ways-to-add-parentheses", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0242", 
    "Level": 1, 
    "Title": "Valid Anagram", 
    "Url": "https://leetcode.com/problems/valid-anagram", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0243", 
    "Level": 1, 
    "Title": "Shortest Word Distance", 
    "Url": "https://leetcode.com/problems/shortest-word-distance", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0244", 
    "Level": 2, 
    "Title": "Shortest Word Distance II", 
    "Url": "https://leetcode.com/problems/shortest-word-distance-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0245", 
    "Level": 2, 
    "Title": "Shortest Word Distance III", 
    "Url": "https://leetcode.com/problems/shortest-word-distance-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0247", 
    "Level": 2, 
    "Title": "Strobogrammatic Number II", 
    "Url": "https://leetcode.com/problems/strobogrammatic-number-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0249", 
    "Level": 2, 
    "Title": "Group Shifted Strings", 
    "Url": "https://leetcode.com/problems/group-shifted-strings", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0252", 
    "Level": 1, 
    "Title": "Meeting Rooms", 
    "Url": "https://leetcode.com/problems/meeting-rooms", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0253", 
    "Level": 2, 
    "Title": "Meeting Rooms II", 
    "Url": "https://leetcode.com/problems/meeting-rooms-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0256", 
    "Level": 2, 
    "Title": "Paint House", 
    "Url": "https://leetcode.com/problems/paint-house", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0257", 
    "Level": 1, 
    "Title": "Binary Tree Paths", 
    "Url": "https://leetcode.com/problems/binary-tree-paths", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0259", 
    "Level": 2, 
    "Title": "3Sum Smaller", 
    "Url": "https://leetcode.com/problems/3sum-smaller", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0260", 
    "Level": 2, 
    "Title": "Single Number III", 
    "Url": "https://leetcode.com/problems/single-number-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0261", 
    "Level": 2, 
    "Title": "Graph Valid Tree", 
    "Url": "https://leetcode.com/problems/graph-valid-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0263", 
    "Level": 1, 
    "Title": "Ugly Number", 
    "Url": "https://leetcode.com/problems/ugly-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0264", 
    "Level": 2, 
    "Title": "Ugly Number II", 
    "Url": "https://leetcode.com/problems/ugly-number-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0266", 
    "Level": 1, 
    "Title": "Palindrome Permutation", 
    "Url": "https://leetcode.com/problems/palindrome-permutation", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0267", 
    "Level": 2, 
    "Title": "Palindrome Permutation II", 
    "Url": "https://leetcode.com/problems/palindrome-permutation-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0268", 
    "Level": 1, 
    "Title": "Missing Number", 
    "Url": "https://leetcode.com/problems/missing-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0270", 
    "Level": 1, 
    "Title": "Closest Binary Search Tree Value", 
    "Url": "https://leetcode.com/problems/closest-binary-search-tree-value", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0277", 
    "Level": 2, 
    "Title": "Find the Celebrity", 
    "Url": "https://leetcode.com/problems/find-the-celebrity", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0278", 
    "Level": 1, 
    "Title": "First Bad Version", 
    "Url": "https://leetcode.com/problems/first-bad-version", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0279", 
    "Level": 2, 
    "Title": "Perfect Squares", 
    "Url": "https://leetcode.com/problems/perfect-squares", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0283", 
    "Level": 1, 
    "Title": "Move Zeroes", 
    "Url": "https://leetcode.com/problems/move-zeroes", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0284", 
    "Level": 2, 
    "Title": "Peeking Iterator", 
    "Url": "https://leetcode.com/problems/peeking-iterator", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0285", 
    "Level": 2, 
    "Title": "Inorder Successor in BST", 
    "Url": "https://leetcode.com/problems/inorder-successor-in-bst", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0286", 
    "Level": 2, 
    "Title": "Walls and Gates", 
    "Url": "https://leetcode.com/problems/walls-and-gates", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0287", 
    "Level": 2, 
    "Title": "Find the Duplicate Number", 
    "Url": "https://leetcode.com/problems/find-the-duplicate-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0289", 
    "Level": 2, 
    "Title": "Game of Life", 
    "Url": "https://leetcode.com/problems/game-of-life", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0290", 
    "Level": 1, 
    "Title": "Word Pattern", 
    "Url": "https://leetcode.com/problems/word-pattern", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0291", 
    "Level": 2, 
    "Title": "Word Pattern II", 
    "Url": "https://leetcode.com/problems/word-pattern-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0295", 
    "Level": 3, 
    "Title": "Find Median from Data Stream", 
    "Url": "https://leetcode.com/problems/find-median-from-data-stream", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0297", 
    "Level": 3, 
    "Title": "Serialize and Deserialize Binary Tree", 
    "Url": "https://leetcode.com/problems/serialize-and-deserialize-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0300", 
    "Level": 2, 
    "Title": "Longest Increasing Subsequence", 
    "Url": "https://leetcode.com/problems/longest-increasing-subsequence", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0303", 
    "Level": 1, 
    "Title": "Range Sum Query - Immutable", 
    "Url": "https://leetcode.com/problems/range-sum-query-immutable", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0304", 
    "Level": 2, 
    "Title": "Range Sum Query 2D - Immutable", 
    "Url": "https://leetcode.com/problems/range-sum-query-2d-immutable", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0305", 
    "Level": 3, 
    "Title": "Number of Islands II", 
    "Url": "https://leetcode.com/problems/number-of-islands-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0310", 
    "Level": 2, 
    "Title": "Minimum Height Trees", 
    "Url": "https://leetcode.com/problems/minimum-height-trees", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0314", 
    "Level": 2, 
    "Title": "Binary Tree Vertical Order Traversal", 
    "Url": "https://leetcode.com/problems/binary-tree-vertical-order-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0316", 
    "Level": 2, 
    "Title": "Remove Duplicate Letters", 
    "Url": "https://leetcode.com/problems/remove-duplicate-letters", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0318", 
    "Level": 2, 
    "Title": "Maximum Product of Word Lengths", 
    "Url": "https://leetcode.com/problems/maximum-product-of-word-lengths", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0322", 
    "Level": 2, 
    "Title": "Coin Change", 
    "Url": "https://leetcode.com/problems/coin-change", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0323", 
    "Level": 2, 
    "Title": "Number of Connected Components in an Undirected Graph", 
    "Url": "https://leetcode.com/problems/number-of-connected-components-in-an-undirected-graph", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0329", 
    "Level": 3, 
    "Title": "Longest Increasing Path in a Matrix", 
    "Url": "https://leetcode.com/problems/longest-increasing-path-in-a-matrix", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0332", 
    "Level": 3, 
    "Title": "Reconstruct Itinerary", 
    "Url": "https://leetcode.com/problems/reconstruct-itinerary", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0333", 
    "Level": 2, 
    "Title": "Largest BST Subtree", 
    "Url": "https://leetcode.com/problems/largest-bst-subtree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0338", 
    "Level": 1, 
    "Title": "Counting Bits", 
    "Url": "https://leetcode.com/problems/counting-bits", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0340", 
    "Level": 2, 
    "Title": "Longest Substring with At Most K Distinct Characters", 
    "Url": "https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0341", 
    "Level": 2, 
    "Title": "Flatten Nested List Iterator", 
    "Url": "https://leetcode.com/problems/flatten-nested-list-iterator", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0346", 
    "Level": 1, 
    "Title": "Moving Average from Data Stream", 
    "Url": "https://leetcode.com/problems/moving-average-from-data-stream", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0347", 
    "Level": 2, 
    "Title": "Top K Frequent Elements", 
    "Url": "https://leetcode.com/problems/top-k-frequent-elements", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0348", 
    "Level": 2, 
    "Title": "Design Tic-Tac-Toe", 
    "Url": "https://leetcode.com/problems/design-tic-tac-toe", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0349", 
    "Level": 1, 
    "Title": "Intersection of Two Arrays", 
    "Url": "https://leetcode.com/problems/intersection-of-two-arrays", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0350", 
    "Level": 1, 
    "Title": "Intersection of Two Arrays II", 
    "Url": "https://leetcode.com/problems/intersection-of-two-arrays-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0352", 
    "Level": 3, 
    "Title": "Data Stream as Disjoint Intervals", 
    "Url": "https://leetcode.com/problems/data-stream-as-disjoint-intervals", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0354", 
    "Level": 3, 
    "Title": "Russian Doll Envelopes", 
    "Url": "https://leetcode.com/problems/russian-doll-envelopes", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0362", 
    "Level": 2, 
    "Title": "Design Hit Counter", 
    "Url": "https://leetcode.com/problems/design-hit-counter", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0366", 
    "Level": 2, 
    "Title": "Find Leaves of Binary Tree", 
    "Url": "https://leetcode.com/problems/find-leaves-of-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0368", 
    "Level": 2, 
    "Title": "Largest Divisible Subset", 
    "Url": "https://leetcode.com/problems/largest-divisible-subset", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0370", 
    "Level": 2, 
    "Title": "Range Addition", 
    "Url": "https://leetcode.com/problems/range-addition", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0377", 
    "Level": 2, 
    "Title": "Combination Sum IV", 
    "Url": "https://leetcode.com/problems/combination-sum-iv", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0378", 
    "Level": 2, 
    "Title": "Kth Smallest Element in a Sorted Matrix", 
    "Url": "https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0380", 
    "Level": 2, 
    "Title": "Insert Delete GetRandom O(1)", 
    "Url": "https://leetcode.com/problems/insert-delete-getrandom-o1", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0384", 
    "Level": 2, 
    "Title": "Shuffle an Array", 
    "Url": "https://leetcode.com/problems/shuffle-an-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0387", 
    "Level": 1, 
    "Title": "First Unique Character in a String", 
    "Url": "https://leetcode.com/problems/first-unique-character-in-a-string", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0392", 
    "Level": 1, 
    "Title": "Is Subsequence", 
    "Url": "https://leetcode.com/problems/is-subsequence", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0394", 
    "Level": 2, 
    "Title": "Decode String", 
    "Url": "https://leetcode.com/problems/decode-string", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0395", 
    "Level": 2, 
    "Title": "Longest Substring with At Least K Repeating Characters", 
    "Url": "https://leetcode.com/problems/longest-substring-with-at-least-k-repeating-characters", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0399", 
    "Level": 2, 
    "Title": "Evaluate Division", 
    "Url": "https://leetcode.com/problems/evaluate-division", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0401", 
    "Level": 1, 
    "Title": "Binary Watch", 
    "Url": "https://leetcode.com/problems/binary-watch", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0406", 
    "Level": 2, 
    "Title": "Queue Reconstruction by Height", 
    "Url": "https://leetcode.com/problems/queue-reconstruction-by-height", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0409", 
    "Level": 1, 
    "Title": "Longest Palindrome", 
    "Url": "https://leetcode.com/problems/longest-palindrome", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0412", 
    "Level": 1, 
    "Title": "Fizz Buzz", 
    "Url": "https://leetcode.com/problems/fizz-buzz", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0416", 
    "Level": 2, 
    "Title": "Partition Equal Subset Sum", 
    "Url": "https://leetcode.com/problems/partition-equal-subset-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0417", 
    "Level": 2, 
    "Title": "Pacific Atlantic Water Flow", 
    "Url": "https://leetcode.com/problems/pacific-atlantic-water-flow", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0419", 
    "Level": 2, 
    "Title": "Battleships in a Board", 
    "Url": "https://leetcode.com/problems/battleships-in-a-board", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0423", 
    "Level": 2, 
    "Title": "Reconstruct Original Digits from English", 
    "Url": "https://leetcode.com/problems/reconstruct-original-digits-from-english", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0429", 
    "Level": 2, 
    "Title": "N-ary Tree Level Order Traversal", 
    "Url": "https://leetcode.com/problems/n-ary-tree-level-order-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0435", 
    "Level": 2, 
    "Title": "Non-overlapping Intervals", 
    "Url": "https://leetcode.com/problems/non-overlapping-intervals", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0437", 
    "Level": 2, 
    "Title": "Path Sum III", 
    "Url": "https://leetcode.com/problems/path-sum-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0438", 
    "Level": 2, 
    "Title": "Find All Anagrams in a String", 
    "Url": "https://leetcode.com/problems/find-all-anagrams-in-a-string", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0441", 
    "Level": 1, 
    "Title": "Arranging Coins", 
    "Url": "https://leetcode.com/problems/arranging-coins", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0449", 
    "Level": 2, 
    "Title": "Serialize and Deserialize BST", 
    "Url": "https://leetcode.com/problems/serialize-and-deserialize-bst", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0450", 
    "Level": 2, 
    "Title": "Delete Node in a BST", 
    "Url": "https://leetcode.com/problems/delete-node-in-a-bst", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0453", 
    "Level": 2, 
    "Title": "Minimum Moves to Equal Array Elements", 
    "Url": "https://leetcode.com/problems/minimum-moves-to-equal-array-elements", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0456", 
    "Level": 2, 
    "Title": "132 Pattern", 
    "Url": "https://leetcode.com/problems/132-pattern", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0459", 
    "Level": 1, 
    "Title": "Repeated Substring Pattern", 
    "Url": "https://leetcode.com/problems/repeated-substring-pattern", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0462", 
    "Level": 2, 
    "Title": "Minimum Moves to Equal Array Elements II", 
    "Url": "https://leetcode.com/problems/minimum-moves-to-equal-array-elements-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0474", 
    "Level": 2, 
    "Title": "Ones and Zeroes", 
    "Url": "https://leetcode.com/problems/ones-and-zeroes", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0480", 
    "Level": 3, 
    "Title": "Sliding Window Median", 
    "Url": "https://leetcode.com/problems/sliding-window-median", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0484", 
    "Level": 2, 
    "Title": "Find Permutation", 
    "Url": "https://leetcode.com/problems/find-permutation", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0490", 
    "Level": 2, 
    "Title": "The Maze", 
    "Url": "https://leetcode.com/problems/the-maze", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0494", 
    "Level": 2, 
    "Title": "Target Sum", 
    "Url": "https://leetcode.com/problems/target-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0496", 
    "Level": 1, 
    "Title": "Next Greater Element I", 
    "Url": "https://leetcode.com/problems/next-greater-element-i", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0498", 
    "Level": 2, 
    "Title": "Diagonal Traverse", 
    "Url": "https://leetcode.com/problems/diagonal-traverse", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0499", 
    "Level": 3, 
    "Title": "The Maze III", 
    "Url": "https://leetcode.com/problems/the-maze-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0503", 
    "Level": 2, 
    "Title": "Next Greater Element II", 
    "Url": "https://leetcode.com/problems/next-greater-element-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0505", 
    "Level": 2, 
    "Title": "The Maze II", 
    "Url": "https://leetcode.com/problems/the-maze-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0509", 
    "Level": 1, 
    "Title": "Fibonacci Number", 
    "Url": "https://leetcode.com/problems/fibonacci-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0510", 
    "Level": 2, 
    "Title": "Inorder Successor in BST II", 
    "Url": "https://leetcode.com/problems/inorder-successor-in-bst-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0513", 
    "Level": 2, 
    "Title": "Find Bottom Left Tree Value", 
    "Url": "https://leetcode.com/problems/find-bottom-left-tree-value", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0515", 
    "Level": 2, 
    "Title": "Find Largest Value in Each Tree Row", 
    "Url": "https://leetcode.com/problems/find-largest-value-in-each-tree-row", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0516", 
    "Level": 2, 
    "Title": "Longest Palindromic Subsequence", 
    "Url": "https://leetcode.com/problems/longest-palindromic-subsequence", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0518", 
    "Level": 2, 
    "Title": "Coin Change 2", 
    "Url": "https://leetcode.com/problems/coin-change-2", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0523", 
    "Level": 2, 
    "Title": "Continuous Subarray Sum", 
    "Url": "https://leetcode.com/problems/continuous-subarray-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0528", 
    "Level": 2, 
    "Title": "Random Pick with Weight", 
    "Url": "https://leetcode.com/problems/random-pick-with-weight", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0532", 
    "Level": 2, 
    "Title": "K-diff Pairs in an Array", 
    "Url": "https://leetcode.com/problems/k-diff-pairs-in-an-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0535", 
    "Level": 2, 
    "Title": "Encode and Decode TinyURL", 
    "Url": "https://leetcode.com/problems/encode-and-decode-tinyurl", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0538", 
    "Level": 2, 
    "Title": "Convert BST to Greater Tree", 
    "Url": "https://leetcode.com/problems/convert-bst-to-greater-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0539", 
    "Level": 2, 
    "Title": "Minimum Time Difference", 
    "Url": "https://leetcode.com/problems/minimum-time-difference", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0540", 
    "Level": 2, 
    "Title": "Single Element in a Sorted Array", 
    "Url": "https://leetcode.com/problems/single-element-in-a-sorted-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0542", 
    "Level": 2, 
    "Title": "01 Matrix", 
    "Url": "https://leetcode.com/problems/01-matrix", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0543", 
    "Level": 1, 
    "Title": "Diameter of Binary Tree", 
    "Url": "https://leetcode.com/problems/diameter-of-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0547", 
    "Level": 2, 
    "Title": "Number of Provinces", 
    "Url": "https://leetcode.com/problems/number-of-provinces", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0559", 
    "Level": 1, 
    "Title": "Maximum Depth of N-ary Tree", 
    "Url": "https://leetcode.com/problems/maximum-depth-of-n-ary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0560", 
    "Level": 2, 
    "Title": "Subarray Sum Equals K", 
    "Url": "https://leetcode.com/problems/subarray-sum-equals-k", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0563", 
    "Level": 1, 
    "Title": "Binary Tree Tilt", 
    "Url": "https://leetcode.com/problems/binary-tree-tilt", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0572", 
    "Level": 1, 
    "Title": "Subtree of Another Tree", 
    "Url": "https://leetcode.com/problems/subtree-of-another-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0576", 
    "Level": 2, 
    "Title": "Out of Boundary Paths", 
    "Url": "https://leetcode.com/problems/out-of-boundary-paths", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0581", 
    "Level": 2, 
    "Title": "Shortest Unsorted Continuous Subarray", 
    "Url": "https://leetcode.com/problems/shortest-unsorted-continuous-subarray", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0583", 
    "Level": 2, 
    "Title": "Delete Operation for Two Strings", 
    "Url": "https://leetcode.com/problems/delete-operation-for-two-strings", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0593", 
    "Level": 2, 
    "Title": "Valid Square", 
    "Url": "https://leetcode.com/problems/valid-square", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0611", 
    "Level": 2, 
    "Title": "Valid Triangle Number", 
    "Url": "https://leetcode.com/problems/valid-triangle-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0617", 
    "Level": 1, 
    "Title": "Merge Two Binary Trees", 
    "Url": "https://leetcode.com/problems/merge-two-binary-trees", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0630", 
    "Level": 3, 
    "Title": "Course Schedule III", 
    "Url": "https://leetcode.com/problems/course-schedule-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0643", 
    "Level": 1, 
    "Title": "Maximum Average Subarray I", 
    "Url": "https://leetcode.com/problems/maximum-average-subarray-i", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0646", 
    "Level": 2, 
    "Title": "Maximum Length of Pair Chain", 
    "Url": "https://leetcode.com/problems/maximum-length-of-pair-chain", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0647", 
    "Level": 2, 
    "Title": "Palindromic Substrings", 
    "Url": "https://leetcode.com/problems/palindromic-substrings", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0648", 
    "Level": 2, 
    "Title": "Replace Words", 
    "Url": "https://leetcode.com/problems/replace-words", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0653", 
    "Level": 1, 
    "Title": "Two Sum IV - Input is a BST", 
    "Url": "https://leetcode.com/problems/two-sum-iv-input-is-a-bst", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0658", 
    "Level": 2, 
    "Title": "Find K Closest Elements", 
    "Url": "https://leetcode.com/problems/find-k-closest-elements", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0662", 
    "Level": 2, 
    "Title": "Maximum Width of Binary Tree", 
    "Url": "https://leetcode.com/problems/maximum-width-of-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0663", 
    "Level": 2, 
    "Title": "Equal Tree Partition", 
    "Url": "https://leetcode.com/problems/equal-tree-partition", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0669", 
    "Level": 2, 
    "Title": "Trim a Binary Search Tree", 
    "Url": "https://leetcode.com/problems/trim-a-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0670", 
    "Level": 2, 
    "Title": "Maximum Swap", 
    "Url": "https://leetcode.com/problems/maximum-swap", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0677", 
    "Level": 2, 
    "Title": "Map Sum Pairs", 
    "Url": "https://leetcode.com/problems/map-sum-pairs", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0680", 
    "Level": 1, 
    "Title": "Valid Palindrome II", 
    "Url": "https://leetcode.com/problems/valid-palindrome-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0682", 
    "Level": 1, 
    "Title": "Baseball Game", 
    "Url": "https://leetcode.com/problems/baseball-game", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0684", 
    "Level": 2, 
    "Title": "Redundant Connection", 
    "Url": "https://leetcode.com/problems/redundant-connection", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0687", 
    "Level": 2, 
    "Title": "Longest Univalue Path", 
    "Url": "https://leetcode.com/problems/longest-univalue-path", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0688", 
    "Level": 2, 
    "Title": "Knight Probability in Chessboard", 
    "Url": "https://leetcode.com/problems/knight-probability-in-chessboard", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0690", 
    "Level": 2, 
    "Title": "Employee Importance", 
    "Url": "https://leetcode.com/problems/employee-importance", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0692", 
    "Level": 2, 
    "Title": "Top K Frequent Words", 
    "Url": "https://leetcode.com/problems/top-k-frequent-words", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0694", 
    "Level": 2, 
    "Title": "Number of Distinct Islands", 
    "Url": "https://leetcode.com/problems/number-of-distinct-islands", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0695", 
    "Level": 2, 
    "Title": "Max Area of Island", 
    "Url": "https://leetcode.com/problems/max-area-of-island", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0700", 
    "Level": 1, 
    "Title": "Search in a Binary Search Tree", 
    "Url": "https://leetcode.com/problems/search-in-a-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0701", 
    "Level": 2, 
    "Title": "Insert into a Binary Search Tree", 
    "Url": "https://leetcode.com/problems/insert-into-a-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0702", 
    "Level": 2, 
    "Title": "Search in a Sorted Array of Unknown Size", 
    "Url": "https://leetcode.com/problems/search-in-a-sorted-array-of-unknown-size", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0703", 
    "Level": 1, 
    "Title": "Kth Largest Element in a Stream", 
    "Url": "https://leetcode.com/problems/kth-largest-element-in-a-stream", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0704", 
    "Level": 1, 
    "Title": "Binary Search", 
    "Url": "https://leetcode.com/problems/binary-search", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0705", 
    "Level": 1, 
    "Title": "Design HashSet", 
    "Url": "https://leetcode.com/problems/design-hashset", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0706", 
    "Level": 1, 
    "Title": "Design HashMap", 
    "Url": "https://leetcode.com/problems/design-hashmap", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0718", 
    "Level": 2, 
    "Title": "Maximum Length of Repeated Subarray", 
    "Url": "https://leetcode.com/problems/maximum-length-of-repeated-subarray", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0721", 
    "Level": 2, 
    "Title": "Accounts Merge", 
    "Url": "https://leetcode.com/problems/accounts-merge", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0724", 
    "Level": 1, 
    "Title": "Find Pivot Index", 
    "Url": "https://leetcode.com/problems/find-pivot-index", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0726", 
    "Level": 3, 
    "Title": "Number of Atoms", 
    "Url": "https://leetcode.com/problems/number-of-atoms", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0735", 
    "Level": 2, 
    "Title": "Asteroid Collision", 
    "Url": "https://leetcode.com/problems/asteroid-collision", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0739", 
    "Level": 2, 
    "Title": "Daily Temperatures", 
    "Url": "https://leetcode.com/problems/daily-temperatures", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0740", 
    "Level": 2, 
    "Title": "Delete and Earn", 
    "Url": "https://leetcode.com/problems/delete-and-earn", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0743", 
    "Level": 2, 
    "Title": "Network Delay Time", 
    "Url": "https://leetcode.com/problems/network-delay-time", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0752", 
    "Level": 2, 
    "Title": "Open the Lock", 
    "Url": "https://leetcode.com/problems/open-the-lock", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0754", 
    "Level": 2, 
    "Title": "Reach a Number", 
    "Url": "https://leetcode.com/problems/reach-a-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0760", 
    "Level": 1, 
    "Title": "Find Anagram Mappings", 
    "Url": "https://leetcode.com/problems/find-anagram-mappings", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0767", 
    "Level": 2, 
    "Title": "Reorganize String", 
    "Url": "https://leetcode.com/problems/reorganize-string", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0776", 
    "Level": 2, 
    "Title": "Split BST", 
    "Url": "https://leetcode.com/problems/split-bst", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0777", 
    "Level": 2, 
    "Title": "Swap Adjacent in LR String", 
    "Url": "https://leetcode.com/problems/swap-adjacent-in-lr-string", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0784", 
    "Level": 2, 
    "Title": "Letter Case Permutation", 
    "Url": "https://leetcode.com/problems/letter-case-permutation", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0785", 
    "Level": 2, 
    "Title": "Is Graph Bipartite?", 
    "Url": "https://leetcode.com/problems/is-graph-bipartite", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0787", 
    "Level": 2, 
    "Title": "Cheapest Flights Within K Stops", 
    "Url": "https://leetcode.com/problems/cheapest-flights-within-k-stops", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0792", 
    "Level": 2, 
    "Title": "Number of Matching Subsequences", 
    "Url": "https://leetcode.com/problems/number-of-matching-subsequences", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0797", 
    "Level": 2, 
    "Title": "All Paths From Source to Target", 
    "Url": "https://leetcode.com/problems/all-paths-from-source-to-target", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0811", 
    "Level": 2, 
    "Title": "Subdomain Visit Count", 
    "Url": "https://leetcode.com/problems/subdomain-visit-count", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0820", 
    "Level": 2, 
    "Title": "Short Encoding of Words", 
    "Url": "https://leetcode.com/problems/short-encoding-of-words", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0841", 
    "Level": 2, 
    "Title": "Keys and Rooms", 
    "Url": "https://leetcode.com/problems/keys-and-rooms", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0844", 
    "Level": 1, 
    "Title": "Backspace String Compare", 
    "Url": "https://leetcode.com/problems/backspace-string-compare", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0862", 
    "Level": 3, 
    "Title": "Shortest Subarray with Sum at Least K", 
    "Url": "https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0863", 
    "Level": 2, 
    "Title": "All Nodes Distance K in Binary Tree", 
    "Url": "https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0867", 
    "Level": 1, 
    "Title": "Transpose Matrix", 
    "Url": "https://leetcode.com/problems/transpose-matrix", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0875", 
    "Level": 2, 
    "Title": "Koko Eating Bananas", 
    "Url": "https://leetcode.com/problems/koko-eating-bananas", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0889", 
    "Level": 2, 
    "Title": "Construct Binary Tree from Preorder and Postorder Traversal", 
    "Url": "https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0896", 
    "Level": 1, 
    "Title": "Monotonic Array", 
    "Url": "https://leetcode.com/problems/monotonic-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0897", 
    "Level": 1, 
    "Title": "Increasing Order Search Tree", 
    "Url": "https://leetcode.com/problems/increasing-order-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0901", 
    "Level": 2, 
    "Title": "Online Stock Span", 
    "Url": "https://leetcode.com/problems/online-stock-span", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0904", 
    "Level": 2, 
    "Title": "Fruit Into Baskets", 
    "Url": "https://leetcode.com/problems/fruit-into-baskets", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0905", 
    "Level": 1, 
    "Title": "Sort Array By Parity", 
    "Url": "https://leetcode.com/problems/sort-array-by-parity", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0907", 
    "Level": 2, 
    "Title": "Sum of Subarray Minimums", 
    "Url": "https://leetcode.com/problems/sum-of-subarray-minimums", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0909", 
    "Level": 2, 
    "Title": "Snakes and Ladders", 
    "Url": "https://leetcode.com/problems/snakes-and-ladders", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0912", 
    "Level": 2, 
    "Title": "Sort an Array", 
    "Url": "https://leetcode.com/problems/sort-an-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0922", 
    "Level": 1, 
    "Title": "Sort Array By Parity II", 
    "Url": "https://leetcode.com/problems/sort-array-by-parity-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0926", 
    "Level": 2, 
    "Title": "Flip String to Monotone Increasing", 
    "Url": "https://leetcode.com/problems/flip-string-to-monotone-increasing", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0930", 
    "Level": 2, 
    "Title": "Binary Subarrays With Sum", 
    "Url": "https://leetcode.com/problems/binary-subarrays-with-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0931", 
    "Level": 2, 
    "Title": "Minimum Falling Path Sum", 
    "Url": "https://leetcode.com/problems/minimum-falling-path-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0934", 
    "Level": 2, 
    "Title": "Shortest Bridge", 
    "Url": "https://leetcode.com/problems/shortest-bridge", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0935", 
    "Level": 2, 
    "Title": "Knight Dialer", 
    "Url": "https://leetcode.com/problems/knight-dialer", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0937", 
    "Level": 1, 
    "Title": "Reorder Data in Log Files", 
    "Url": "https://leetcode.com/problems/reorder-data-in-log-files", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0938", 
    "Level": 1, 
    "Title": "Range Sum of BST", 
    "Url": "https://leetcode.com/problems/range-sum-of-bst", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0947", 
    "Level": 2, 
    "Title": "Most Stones Removed with Same Row or Column", 
    "Url": "https://leetcode.com/problems/most-stones-removed-with-same-row-or-column", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0954", 
    "Level": 2, 
    "Title": "Array of Doubled Pairs", 
    "Url": "https://leetcode.com/problems/array-of-doubled-pairs", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0958", 
    "Level": 2, 
    "Title": "Check Completeness of a Binary Tree", 
    "Url": "https://leetcode.com/problems/check-completeness-of-a-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0968", 
    "Level": 3, 
    "Title": "Binary Tree Cameras", 
    "Url": "https://leetcode.com/problems/binary-tree-cameras", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0969", 
    "Level": 2, 
    "Title": "Pancake Sorting", 
    "Url": "https://leetcode.com/problems/pancake-sorting", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0973", 
    "Level": 2, 
    "Title": "K Closest Points to Origin", 
    "Url": "https://leetcode.com/problems/k-closest-points-to-origin", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0975", 
    "Level": 3, 
    "Title": "Odd Even Jump", 
    "Url": "https://leetcode.com/problems/odd-even-jump", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0979", 
    "Level": 2, 
    "Title": "Distribute Coins in Binary Tree", 
    "Url": "https://leetcode.com/problems/distribute-coins-in-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0981", 
    "Level": 2, 
    "Title": "Time Based Key-Value Store", 
    "Url": "https://leetcode.com/problems/time-based-key-value-store", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0983", 
    "Level": 2, 
    "Title": "Minimum Cost For Tickets", 
    "Url": "https://leetcode.com/problems/minimum-cost-for-tickets", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0985", 
    "Level": 2, 
    "Title": "Sum of Even Numbers After Queries", 
    "Url": "https://leetcode.com/problems/sum-of-even-numbers-after-queries", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0986", 
    "Level": 2, 
    "Title": "Interval List Intersections", 
    "Url": "https://leetcode.com/problems/interval-list-intersections", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0987", 
    "Level": 3, 
    "Title": "Vertical Order Traversal of a Binary Tree", 
    "Url": "https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "0994", 
    "Level": 2, 
    "Title": "Rotting Oranges", 
    "Url": "https://leetcode.com/problems/rotting-oranges", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1008", 
    "Level": 2, 
    "Title": "Construct Binary Search Tree from Preorder Traversal", 
    "Url": "https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1011", 
    "Level": 2, 
    "Title": "Capacity To Ship Packages Within D Days", 
    "Url": "https://leetcode.com/problems/capacity-to-ship-packages-within-d-days", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1014", 
    "Level": 2, 
    "Title": "Best Sightseeing Pair", 
    "Url": "https://leetcode.com/problems/best-sightseeing-pair", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1020", 
    "Level": 2, 
    "Title": "Number of Enclaves", 
    "Url": "https://leetcode.com/problems/number-of-enclaves", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1025", 
    "Level": 1, 
    "Title": "Divisor Game", 
    "Url": "https://leetcode.com/problems/divisor-game", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1027", 
    "Level": 2, 
    "Title": "Longest Arithmetic Subsequence", 
    "Url": "https://leetcode.com/problems/longest-arithmetic-subsequence", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1029", 
    "Level": 2, 
    "Title": "Two City Scheduling", 
    "Url": "https://leetcode.com/problems/two-city-scheduling", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1038", 
    "Level": 2, 
    "Title": "Binary Search Tree to Greater Sum Tree", 
    "Url": "https://leetcode.com/problems/binary-search-tree-to-greater-sum-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1041", 
    "Level": 2, 
    "Title": "Robot Bounded In Circle", 
    "Url": "https://leetcode.com/problems/robot-bounded-in-circle", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1046", 
    "Level": 1, 
    "Title": "Last Stone Weight", 
    "Url": "https://leetcode.com/problems/last-stone-weight", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1048", 
    "Level": 2, 
    "Title": "Longest String Chain", 
    "Url": "https://leetcode.com/problems/longest-string-chain", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1049", 
    "Level": 2, 
    "Title": "Last Stone Weight II", 
    "Url": "https://leetcode.com/problems/last-stone-weight-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1059", 
    "Level": 2, 
    "Title": "All Paths from Source Lead to Destination", 
    "Url": "https://leetcode.com/problems/all-paths-from-source-lead-to-destination", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1087", 
    "Level": 2, 
    "Title": "Brace Expansion", 
    "Url": "https://leetcode.com/problems/brace-expansion", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1091", 
    "Level": 2, 
    "Title": "Shortest Path in Binary Matrix", 
    "Url": "https://leetcode.com/problems/shortest-path-in-binary-matrix", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1094", 
    "Level": 2, 
    "Title": "Car Pooling", 
    "Url": "https://leetcode.com/problems/car-pooling", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1096", 
    "Level": 3, 
    "Title": "Brace Expansion II", 
    "Url": "https://leetcode.com/problems/brace-expansion-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1099", 
    "Level": 1, 
    "Title": "Two Sum Less Than K", 
    "Url": "https://leetcode.com/problems/two-sum-less-than-k", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1110", 
    "Level": 2, 
    "Title": "Delete Nodes And Return Forest", 
    "Url": "https://leetcode.com/problems/delete-nodes-and-return-forest", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1130", 
    "Level": 2, 
    "Title": "Minimum Cost Tree From Leaf Values", 
    "Url": "https://leetcode.com/problems/minimum-cost-tree-from-leaf-values", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1137", 
    "Level": 1, 
    "Title": "N-th Tribonacci Number", 
    "Url": "https://leetcode.com/problems/n-th-tribonacci-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1143", 
    "Level": 2, 
    "Title": "Longest Common Subsequence", 
    "Url": "https://leetcode.com/problems/longest-common-subsequence", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1146", 
    "Level": 2, 
    "Title": "Snapshot Array", 
    "Url": "https://leetcode.com/problems/snapshot-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1160", 
    "Level": 1, 
    "Title": "Find Words That Can Be Formed by Characters", 
    "Url": "https://leetcode.com/problems/find-words-that-can-be-formed-by-characters", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1161", 
    "Level": 2, 
    "Title": "Maximum Level Sum of a Binary Tree", 
    "Url": "https://leetcode.com/problems/maximum-level-sum-of-a-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1162", 
    "Level": 2, 
    "Title": "As Far from Land as Possible", 
    "Url": "https://leetcode.com/problems/as-far-from-land-as-possible", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1165", 
    "Level": 1, 
    "Title": "Single-Row Keyboard", 
    "Url": "https://leetcode.com/problems/single-row-keyboard", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1166", 
    "Level": 2, 
    "Title": "Design File System", 
    "Url": "https://leetcode.com/problems/design-file-system", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1167", 
    "Level": 2, 
    "Title": "Minimum Cost to Connect Sticks", 
    "Url": "https://leetcode.com/problems/minimum-cost-to-connect-sticks", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1182", 
    "Level": 2, 
    "Title": "Shortest Distance to Target Color", 
    "Url": "https://leetcode.com/problems/shortest-distance-to-target-color", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1192", 
    "Level": 3, 
    "Title": "Critical Connections in a Network", 
    "Url": "https://leetcode.com/problems/critical-connections-in-a-network", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1197", 
    "Level": 2, 
    "Title": "Minimum Knight Moves", 
    "Url": "https://leetcode.com/problems/minimum-knight-moves", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1198", 
    "Level": 2, 
    "Title": "Find Smallest Common Element in All Rows", 
    "Url": "https://leetcode.com/problems/find-smallest-common-element-in-all-rows", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1202", 
    "Level": 2, 
    "Title": "Smallest String With Swaps", 
    "Url": "https://leetcode.com/problems/smallest-string-with-swaps", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1209", 
    "Level": 2, 
    "Title": "Remove All Adjacent Duplicates in String II", 
    "Url": "https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1214", 
    "Level": 2, 
    "Title": "Two Sum BSTs", 
    "Url": "https://leetcode.com/problems/two-sum-bsts", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1219", 
    "Level": 2, 
    "Title": "Path with Maximum Gold", 
    "Url": "https://leetcode.com/problems/path-with-maximum-gold", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1235", 
    "Level": 3, 
    "Title": "Maximum Profit in Job Scheduling", 
    "Url": "https://leetcode.com/problems/maximum-profit-in-job-scheduling", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1248", 
    "Level": 2, 
    "Title": "Count Number of Nice Subarrays", 
    "Url": "https://leetcode.com/problems/count-number-of-nice-subarrays", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1254", 
    "Level": 2, 
    "Title": "Number of Closed Islands", 
    "Url": "https://leetcode.com/problems/number-of-closed-islands", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1260", 
    "Level": 1, 
    "Title": "Shift 2D Grid", 
    "Url": "https://leetcode.com/problems/shift-2d-grid", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1268", 
    "Level": 2, 
    "Title": "Search Suggestions System", 
    "Url": "https://leetcode.com/problems/search-suggestions-system", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1275", 
    "Level": 1, 
    "Title": "Find Winner on a Tic Tac Toe Game", 
    "Url": "https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1277", 
    "Level": 2, 
    "Title": "Count Square Submatrices with All Ones", 
    "Url": "https://leetcode.com/problems/count-square-submatrices-with-all-ones", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1283", 
    "Level": 2, 
    "Title": "Find the Smallest Divisor Given a Threshold", 
    "Url": "https://leetcode.com/problems/find-the-smallest-divisor-given-a-threshold", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1289", 
    "Level": 3, 
    "Title": "Minimum Falling Path Sum II", 
    "Url": "https://leetcode.com/problems/minimum-falling-path-sum-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1302", 
    "Level": 2, 
    "Title": "Deepest Leaves Sum", 
    "Url": "https://leetcode.com/problems/deepest-leaves-sum", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1305", 
    "Level": 2, 
    "Title": "All Elements in Two Binary Search Trees", 
    "Url": "https://leetcode.com/problems/all-elements-in-two-binary-search-trees", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1306", 
    "Level": 2, 
    "Title": "Jump Game III", 
    "Url": "https://leetcode.com/problems/jump-game-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1319", 
    "Level": 2, 
    "Title": "Number of Operations to Make Network Connected", 
    "Url": "https://leetcode.com/problems/number-of-operations-to-make-network-connected", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1332", 
    "Level": 1, 
    "Title": "Remove Palindromic Subsequences", 
    "Url": "https://leetcode.com/problems/remove-palindromic-subsequences", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1342", 
    "Level": 1, 
    "Title": "Number of Steps to Reduce a Number to Zero", 
    "Url": "https://leetcode.com/problems/number-of-steps-to-reduce-a-number-to-zero", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1344", 
    "Level": 2, 
    "Title": "Angle Between Hands of a Clock", 
    "Url": "https://leetcode.com/problems/angle-between-hands-of-a-clock", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1358", 
    "Level": 2, 
    "Title": "Number of Substrings Containing All Three Characters", 
    "Url": "https://leetcode.com/problems/number-of-substrings-containing-all-three-characters", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1361", 
    "Level": 2, 
    "Title": "Validate Binary Tree Nodes", 
    "Url": "https://leetcode.com/problems/validate-binary-tree-nodes", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1379", 
    "Level": 2, 
    "Title": "Find a Corresponding Node of a Binary Tree in a Clone of That Tree", 
    "Url": "https://leetcode.com/problems/find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1382", 
    "Level": 2, 
    "Title": "Balance a Binary Search Tree", 
    "Url": "https://leetcode.com/problems/balance-a-binary-search-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1391", 
    "Level": 2, 
    "Title": "Check if There is a Valid Path in a Grid", 
    "Url": "https://leetcode.com/problems/check-if-there-is-a-valid-path-in-a-grid", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1395", 
    "Level": 2, 
    "Title": "Count Number of Teams", 
    "Url": "https://leetcode.com/problems/count-number-of-teams", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1396", 
    "Level": 2, 
    "Title": "Design Underground System", 
    "Url": "https://leetcode.com/problems/design-underground-system", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1414", 
    "Level": 2, 
    "Title": "Find the Minimum Number of Fibonacci Numbers Whose Sum Is K", 
    "Url": "https://leetcode.com/problems/find-the-minimum-number-of-fibonacci-numbers-whose-sum-is-k", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1423", 
    "Level": 2, 
    "Title": "Maximum Points You Can Obtain from Cards", 
    "Url": "https://leetcode.com/problems/maximum-points-you-can-obtain-from-cards", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1429", 
    "Level": 2, 
    "Title": "First Unique Number", 
    "Url": "https://leetcode.com/problems/first-unique-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1438", 
    "Level": 2, 
    "Title": "Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit", 
    "Url": "https://leetcode.com/problems/longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1443", 
    "Level": 2, 
    "Title": "Minimum Time to Collect All Apples in a Tree", 
    "Url": "https://leetcode.com/problems/minimum-time-to-collect-all-apples-in-a-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1448", 
    "Level": 2, 
    "Title": "Count Good Nodes in Binary Tree", 
    "Url": "https://leetcode.com/problems/count-good-nodes-in-binary-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1461", 
    "Level": 2, 
    "Title": "Check If a String Contains All Binary Codes of Size K", 
    "Url": "https://leetcode.com/problems/check-if-a-string-contains-all-binary-codes-of-size-k", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1465", 
    "Level": 2, 
    "Title": "Maximum Area of a Piece of Cake After Horizontal and Vertical Cuts", 
    "Url": "https://leetcode.com/problems/maximum-area-of-a-piece-of-cake-after-horizontal-and-vertical-cuts", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1475", 
    "Level": 1, 
    "Title": "Final Prices With a Special Discount in a Shop", 
    "Url": "https://leetcode.com/problems/final-prices-with-a-special-discount-in-a-shop", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1480", 
    "Level": 1, 
    "Title": "Running Sum of 1d Array", 
    "Url": "https://leetcode.com/problems/running-sum-of-1d-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1525", 
    "Level": 2, 
    "Title": "Number of Good Ways to Split a String", 
    "Url": "https://leetcode.com/problems/number-of-good-ways-to-split-a-string", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1530", 
    "Level": 2, 
    "Title": "Number of Good Leaf Nodes Pairs", 
    "Url": "https://leetcode.com/problems/number-of-good-leaf-nodes-pairs", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1557", 
    "Level": 2, 
    "Title": "Minimum Number of Vertices to Reach All Nodes", 
    "Url": "https://leetcode.com/problems/minimum-number-of-vertices-to-reach-all-nodes", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1567", 
    "Level": 2, 
    "Title": "Maximum Length of Subarray With Positive Product", 
    "Url": "https://leetcode.com/problems/maximum-length-of-subarray-with-positive-product", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1570", 
    "Level": 2, 
    "Title": "Dot Product of Two Sparse Vectors", 
    "Url": "https://leetcode.com/problems/dot-product-of-two-sparse-vectors", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1584", 
    "Level": 2, 
    "Title": "Min Cost to Connect All Points", 
    "Url": "https://leetcode.com/problems/min-cost-to-connect-all-points", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1593", 
    "Level": 2, 
    "Title": "Split a String Into the Max Number of Unique Substrings", 
    "Url": "https://leetcode.com/problems/split-a-string-into-the-max-number-of-unique-substrings", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1603", 
    "Level": 1, 
    "Title": "Design Parking System", 
    "Url": "https://leetcode.com/problems/design-parking-system", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1631", 
    "Level": 2, 
    "Title": "Path With Minimum Effort", 
    "Url": "https://leetcode.com/problems/path-with-minimum-effort", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1641", 
    "Level": 2, 
    "Title": "Count Sorted Vowel Strings", 
    "Url": "https://leetcode.com/problems/count-sorted-vowel-strings", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1642", 
    "Level": 2, 
    "Title": "Furthest Building You Can Reach", 
    "Url": "https://leetcode.com/problems/furthest-building-you-can-reach", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1644", 
    "Level": 2, 
    "Title": "Lowest Common Ancestor of a Binary Tree II", 
    "Url": "https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree-ii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1650", 
    "Level": 2, 
    "Title": "Lowest Common Ancestor of a Binary Tree III", 
    "Url": "https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree-iii", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1658", 
    "Level": 2, 
    "Title": "Minimum Operations to Reduce X to Zero", 
    "Url": "https://leetcode.com/problems/minimum-operations-to-reduce-x-to-zero", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1679", 
    "Level": 2, 
    "Title": "Max Number of K-Sum Pairs", 
    "Url": "https://leetcode.com/problems/max-number-of-k-sum-pairs", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1689", 
    "Level": 2, 
    "Title": "Partitioning Into Minimum Number Of Deci-Binary Numbers", 
    "Url": "https://leetcode.com/problems/partitioning-into-minimum-number-of-deci-binary-numbers", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1695", 
    "Level": 2, 
    "Title": "Maximum Erasure Value", 
    "Url": "https://leetcode.com/problems/maximum-erasure-value", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1696", 
    "Level": 2, 
    "Title": "Jump Game VI", 
    "Url": "https://leetcode.com/problems/jump-game-vi", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1706", 
    "Level": 2, 
    "Title": "Where Will the Ball Fall", 
    "Url": "https://leetcode.com/problems/where-will-the-ball-fall", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1710", 
    "Level": 1, 
    "Title": "Maximum Units on a Truck", 
    "Url": "https://leetcode.com/problems/maximum-units-on-a-truck", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1711", 
    "Level": 2, 
    "Title": "Count Good Meals", 
    "Url": "https://leetcode.com/problems/count-good-meals", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1721", 
    "Level": 2, 
    "Title": "Swapping Nodes in a Linked List", 
    "Url": "https://leetcode.com/problems/swapping-nodes-in-a-linked-list", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1730", 
    "Level": 2, 
    "Title": "Shortest Path to Get Food", 
    "Url": "https://leetcode.com/problems/shortest-path-to-get-food", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1762", 
    "Level": 2, 
    "Title": "Buildings With an Ocean View", 
    "Url": "https://leetcode.com/problems/buildings-with-an-ocean-view", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1774", 
    "Level": 2, 
    "Title": "Closest Dessert Cost", 
    "Url": "https://leetcode.com/problems/closest-dessert-cost", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1804", 
    "Level": 2, 
    "Title": "Implement Trie II (Prefix Tree)", 
    "Url": "https://leetcode.com/problems/implement-trie-ii-prefix-tree", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1838", 
    "Level": 2, 
    "Title": "Frequency of the Most Frequent Element", 
    "Url": "https://leetcode.com/problems/frequency-of-the-most-frequent-element", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1861", 
    "Level": 2, 
    "Title": "Rotating the Box", 
    "Url": "https://leetcode.com/problems/rotating-the-box", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1905", 
    "Level": 2, 
    "Title": "Count Sub Islands", 
    "Url": "https://leetcode.com/problems/count-sub-islands", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1937", 
    "Level": 2, 
    "Title": "Maximum Number of Points with Cost", 
    "Url": "https://leetcode.com/problems/maximum-number-of-points-with-cost", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "1971", 
    "Level": 1, 
    "Title": "Find if Path Exists in Graph", 
    "Url": "https://leetcode.com/problems/find-if-path-exists-in-graph", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2007", 
    "Level": 2, 
    "Title": "Find Original Array From Doubled Array", 
    "Url": "https://leetcode.com/problems/find-original-array-from-doubled-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2008", 
    "Level": 2, 
    "Title": "Maximum Earnings From Taxi", 
    "Url": "https://leetcode.com/problems/maximum-earnings-from-taxi", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2013", 
    "Level": 2, 
    "Title": "Detect Squares", 
    "Url": "https://leetcode.com/problems/detect-squares", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2093", 
    "Level": 2, 
    "Title": "Minimum Cost to Reach City With Discounts", 
    "Url": "https://leetcode.com/problems/minimum-cost-to-reach-city-with-discounts", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2104", 
    "Level": 2, 
    "Title": "Sum of Subarray Ranges", 
    "Url": "https://leetcode.com/problems/sum-of-subarray-ranges", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2154", 
    "Level": 1, 
    "Title": "Keep Multiplying Found Values by Two", 
    "Url": "https://leetcode.com/problems/keep-multiplying-found-values-by-two", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2155", 
    "Level": 2, 
    "Title": "All Divisions With the Highest Score of a Binary Array", 
    "Url": "https://leetcode.com/problems/all-divisions-with-the-highest-score-of-a-binary-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2156", 
    "Level": 3, 
    "Title": "Find Substring With Given Hash Value", 
    "Url": "https://leetcode.com/problems/find-substring-with-given-hash-value", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2215", 
    "Level": 1, 
    "Title": "Find the Difference of Two Arrays", 
    "Url": "https://leetcode.com/problems/find-the-difference-of-two-arrays", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2216", 
    "Level": 2, 
    "Title": "Minimum Deletions to Make Array Beautiful", 
    "Url": "https://leetcode.com/problems/minimum-deletions-to-make-array-beautiful", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2217", 
    "Level": 2, 
    "Title": "Find Palindrome With Fixed Length", 
    "Url": "https://leetcode.com/problems/find-palindrome-with-fixed-length", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2218", 
    "Level": 3, 
    "Title": "Maximum Value of K Coins From Piles", 
    "Url": "https://leetcode.com/problems/maximum-value-of-k-coins-from-piles", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2224", 
    "Level": 1, 
    "Title": "Minimum Number of Operations to Convert Time", 
    "Url": "https://leetcode.com/problems/minimum-number-of-operations-to-convert-time", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2225", 
    "Level": 2, 
    "Title": "Find Players With Zero or One Losses", 
    "Url": "https://leetcode.com/problems/find-players-with-zero-or-one-losses", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2226", 
    "Level": 2, 
    "Title": "Maximum Candies Allocated to K Children", 
    "Url": "https://leetcode.com/problems/maximum-candies-allocated-to-k-children", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2227", 
    "Level": 3, 
    "Title": "Encrypt and Decrypt Strings", 
    "Url": "https://leetcode.com/problems/encrypt-and-decrypt-strings", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2231", 
    "Level": 1, 
    "Title": "Largest Number After Digit Swaps by Parity", 
    "Url": "https://leetcode.com/problems/largest-number-after-digit-swaps-by-parity", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2232", 
    "Level": 2, 
    "Title": "Minimize Result by Adding Parentheses to Expression", 
    "Url": "https://leetcode.com/problems/minimize-result-by-adding-parentheses-to-expression", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2233", 
    "Level": 2, 
    "Title": "Maximum Product After K Increments", 
    "Url": "https://leetcode.com/problems/maximum-product-after-k-increments", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2248", 
    "Level": 1, 
    "Title": "Intersection of Multiple Arrays", 
    "Url": "https://leetcode.com/problems/intersection-of-multiple-arrays", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2249", 
    "Level": 2, 
    "Title": "Count Lattice Points Inside a Circle", 
    "Url": "https://leetcode.com/problems/count-lattice-points-inside-a-circle", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2250", 
    "Level": 2, 
    "Title": "Count Number of Rectangles Containing Each Point", 
    "Url": "https://leetcode.com/problems/count-number-of-rectangles-containing-each-point", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2251", 
    "Level": 3, 
    "Title": "Number of Flowers in Full Bloom", 
    "Url": "https://leetcode.com/problems/number-of-flowers-in-full-bloom", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2255", 
    "Level": 1, 
    "Title": "Count Prefixes of a Given String", 
    "Url": "https://leetcode.com/problems/count-prefixes-of-a-given-string", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2256", 
    "Level": 2, 
    "Title": "Minimum Average Difference", 
    "Url": "https://leetcode.com/problems/minimum-average-difference", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2257", 
    "Level": 2, 
    "Title": "Count Unguarded Cells in the Grid", 
    "Url": "https://leetcode.com/problems/count-unguarded-cells-in-the-grid", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2258", 
    "Level": 3, 
    "Title": "Escape the Spreading Fire", 
    "Url": "https://leetcode.com/problems/escape-the-spreading-fire", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2269", 
    "Level": 1, 
    "Title": "Find the K-Beauty of a Number", 
    "Url": "https://leetcode.com/problems/find-the-k-beauty-of-a-number", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2270", 
    "Level": 2, 
    "Title": "Number of Ways to Split Array", 
    "Url": "https://leetcode.com/problems/number-of-ways-to-split-array", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2273", 
    "Level": 1, 
    "Title": "Find Resultant Array After Removing Anagrams", 
    "Url": "https://leetcode.com/problems/find-resultant-array-after-removing-anagrams", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2274", 
    "Level": 2, 
    "Title": "Maximum Consecutive Floors Without Special Floors", 
    "Url": "https://leetcode.com/problems/maximum-consecutive-floors-without-special-floors", 
    "Tags": [], 
    "Memo": ""
},
{
    "Number": "2275", 
    "Level": 2, 
    "Title": "Largest Combination With Bitwise AND Greater Than Zero", 
    "Url": "https://leetcode.com/problems/largest-combination-with-bitwise-and-greater-than-zero", 
    "Tags": [], 
    "Memo": ""
}
]