lcode.json.bak

lcode_data = `
[
{"Number": "0001", "Level": 1, "Title": "Two Sum", "Url": "https://leetcode.com/problems/two-sum", "Tags": [], "Memo": ""},
{"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": "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": "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": "0031", "Level": 2, "Title": "Next Permutation", "Url": "https://leetcode.com/problems/next-permutation", "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": "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": "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": "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": "0056", "Level": 2, "Title": "Merge Intervals", "Url": "https://leetcode.com/problems/merge-intervals", "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": "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": "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": "0083", "Level": 1, "Title": "Remove Duplicates from Sorted List", "Url": "https://leetcode.com/problems/remove-duplicates-from-sorted-list", "Tags": [], "Memo": ""},
{"Number": "0086", "Level": 2, "Title": "Partition List", "Url": "https://leetcode.com/problems/partition-list", "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": "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": "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": "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": "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": "0136", "Level": 1, "Title": "Single Number", "Url": "https://leetcode.com/problems/single-number", "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": "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": "0160", "Level": 1, "Title": "Intersection of Two Linked Lists", "Url": "https://leetcode.com/problems/intersection-of-two-linked-lists", "Tags": [], "Memo": ""},
{"Number": "0162", "Level": 2, "Title": "Find Peak Element", "Url": "https://leetcode.com/problems/find-peak-element", "Tags": [], "Memo": ""},
{"Number": "0167", "Level": 1, "Title": "Two Sum II - Input Array Is Sorted", "Url": "https://leetcode.com/problems/two-sum-ii-input-array-is-sorted", "Tags": [], "Memo": ""},
{"Number": "0173", "Level": 2, "Title": "Binary Search Tree Iterator", "Url": "https://leetcode.com/problems/binary-search-tree-iterator", "Tags": [], "Memo": ""},
{"Number": "0189", "Level": 2, "Title": "Rotate Array", "Url": "https://leetcode.com/problems/rotate-array", "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": "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": "0226", "Level": 1, "Title": "Invert Binary Tree", "Url": "https://leetcode.com/problems/invert-binary-tree", "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": "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": "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": "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": "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": "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": "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": "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": "0290", "Level": 1, "Title": "Word Pattern", "Url": "https://leetcode.com/problems/word-pattern", "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": "0314", "Level": 2, "Title": "Binary Tree Vertical Order Traversal", "Url": "https://leetcode.com/problems/binary-tree-vertical-order-traversal", "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": "0332", "Level": 3, "Title": "Reconstruct Itinerary", "Url": "https://leetcode.com/problems/reconstruct-itinerary", "Tags": [], "Memo": ""},
{"Number": "0341", "Level": 2, "Title": "Flatten Nested List Iterator", "Url": "https://leetcode.com/problems/flatten-nested-list-iterator", "Tags": [], "Memo": ""},
{"Number": "0347", "Level": 2, "Title": "Top K Frequent Elements", "Url": "https://leetcode.com/problems/top-k-frequent-elements", "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": "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": "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": "0387", "Level": 1, "Title": "First Unique Character in a String", "Url": "https://leetcode.com/problems/first-unique-character-in-a-string", "Tags": [], "Memo": ""},
{"Number": "0394", "Level": 2, "Title": "Decode String", "Url": "https://leetcode.com/problems/decode-string", "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": "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": "0437", "Level": 2, "Title": "Path Sum III", "Url": "https://leetcode.com/problems/path-sum-iii", "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": "0459", "Level": 1, "Title": "Repeated Substring Pattern", "Url": "https://leetcode.com/problems/repeated-substring-pattern", "Tags": [], "Memo": ""},
{"Number": "0474", "Level": 2, "Title": "Ones and Zeroes", "Url": "https://leetcode.com/problems/ones-and-zeroes", "Tags": [], "Memo": ""},
{"Number": "0494", "Level": 2, "Title": "Target Sum", "Url": "https://leetcode.com/problems/target-sum", "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": "0518", "Level": 2, "Title": "Coin Change 2", "Url": "https://leetcode.com/problems/coin-change-2", "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": "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": "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": "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": "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": "0670", "Level": 2, "Title": "Maximum Swap", "Url": "https://leetcode.com/problems/maximum-swap", "Tags": [], "Memo": ""},
{"Number": "0680", "Level": 1, "Title": "Valid Palindrome II", "Url": "https://leetcode.com/problems/valid-palindrome-ii", "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": "0690", "Level": 2, "Title": "Employee Importance", "Url": "https://leetcode.com/problems/employee-importance", "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": "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": "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": "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": "0767", "Level": 2, "Title": "Reorganize String", "Url": "https://leetcode.com/problems/reorganize-string", "Tags": [], "Memo": ""},
{"Number": "0784", "Level": 2, "Title": "Letter Case Permutation", "Url": "https://leetcode.com/problems/letter-case-permutation", "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": "0797", "Level": 2, "Title": "All Paths From Source to Target", "Url": "https://leetcode.com/problems/all-paths-from-source-to-target", "Tags": [], "Memo": ""},
{"Number": "0841", "Level": 2, "Title": "Keys and Rooms", "Url": "https://leetcode.com/problems/keys-and-rooms", "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": "0905", "Level": 1, "Title": "Sort Array By Parity", "Url": "https://leetcode.com/problems/sort-array-by-parity", "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": "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": "0958", "Level": 2, "Title": "Check Completeness of a Binary Tree", "Url": "https://leetcode.com/problems/check-completeness-of-a-binary-tree", "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": "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": "0994", "Level": 2, "Title": "Rotting Oranges", "Url": "https://leetcode.com/problems/rotting-oranges", "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": "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": "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": "1087", "Level": 2, "Title": "Brace Expansion", "Url": "https://leetcode.com/problems/brace-expansion", "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": "1214", "Level": 2, "Title": "Two Sum BSTs", "Url": "https://leetcode.com/problems/two-sum-bsts", "Tags": [], "Memo": ""},
{"Number": "1254", "Level": 2, "Title": "Number of Closed Islands", "Url": "https://leetcode.com/problems/number-of-closed-islands", "Tags": [], "Memo": ""},
{"Number": "1268", "Level": 2, "Title": "Search Suggestions System", "Url": "https://leetcode.com/problems/search-suggestions-system", "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": "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": "1429", "Level": 2, "Title": "First Unique Number", "Url": "https://leetcode.com/problems/first-unique-number", "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": "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": "1711", "Level": 2, "Title": "Count Good Meals", "Url": "https://leetcode.com/problems/count-good-meals", "Tags": [], "Memo": ""},
{"Number": "1774", "Level": 2, "Title": "Closest Dessert Cost", "Url": "https://leetcode.com/problems/closest-dessert-cost", "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": ""}
]
`;