Leetcode

My leetcode work and progress It will be showing my progress with Data Structures and Algorithms synced with my Leetcode account.

LeetCode Topics

Linked List

0002-add-two-numbers
0019-remove-nth-node-from-end-of-list
0024-swap-nodes-in-pairs
0061-rotate-list
0234-palindrome-linked-list
0237-delete-node-in-a-linked-list
2216-delete-the-middle-node-of-a-linked-list

Math

0002-add-two-numbers
0007-reverse-integer
0009-palindrome-number
0048-rotate-image
1013-fibonacci-number
1510-stone-game-iv
1622-fancy-sequence
1878-get-biggest-three-rhombus-sums-in-a-grid
1903-largest-odd-number-in-string
1979-find-greatest-common-divisor-of-array
2033-minimum-operations-to-make-a-uni-value-grid
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3300-minimum-element-after-replacement-with-digit-sum
3312-sorted-gcd-pair-queries
3336-find-the-number-of-subsequences-with-equal-gcd
3464-maximize-the-distance-between-points-on-a-square
3513-number-of-unique-xor-triplets-i
3629-minimum-jumps-to-reach-end-via-prime-teleportation
3658-gcd-of-odd-and-even-sums
3751-total-waviness-of-numbers-in-range-i
3753-total-waviness-of-numbers-in-range-ii
3754-concatenate-non-zero-digits-and-multiply-by-sum-i
3756-concatenate-non-zero-digits-and-multiply-by-sum-ii
3761-minimum-absolute-distance-between-mirror-pairs
3783-mirror-distance-of-an-integer
3867-sum-of-gcd-of-formed-pairs

Recursion

0002-add-two-numbers
0024-swap-nodes-in-pairs
0234-palindrome-linked-list
1013-fibonacci-number
1545-find-kth-bit-in-nth-binary-string

Two Pointers

0019-remove-nth-node-from-end-of-list
0026-remove-duplicates-from-sorted-array
0027-remove-element
0061-rotate-list
0234-palindrome-linked-list
0455-assign-cookies
1855-maximum-distance-between-a-pair-of-values
1861-rotating-the-box
2216-delete-the-middle-node-of-a-linked-list
2540-minimum-common-value
3302-find-the-lexicographically-smallest-valid-sequence
3534-path-existence-queries-in-a-graph-ii
3633-earliest-finish-time-for-land-and-water-rides-i
3643-flip-square-submatrix-vertically
3867-sum-of-gcd-of-formed-pairs

Array

0001-two-sum
0026-remove-duplicates-from-sorted-array
0027-remove-element
0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0048-rotate-image
0081-search-in-rotated-sorted-array-ii
0153-find-minimum-in-rotated-sorted-array
0154-find-minimum-in-rotated-sorted-array-ii
0455-assign-cookies
0540-single-element-in-a-sorted-array
0792-binary-search
0860-lemonade-change
0874-walking-robot-simulation
1260-shift-2d-grid
1288-remove-covered-intervals
1301-number-of-paths-with-max-score
1306-jump-game-iii
1340-jump-game-v
1345-jump-game-iv
1391-check-if-there-is-a-valid-path-in-a-grid
1536-minimum-swaps-to-arrange-a-binary-grid
1559-detect-cycles-in-2d-grid
1582-special-positions-in-a-binary-matrix
1665-minimum-initial-energy-to-finish-tasks
1674-minimum-moves-to-make-array-complementary
1722-minimize-hamming-distance-after-swap-operations
1727-largest-submatrix-with-rearrangements
1752-check-if-array-is-sorted-and-rotated
1848-minimum-distance-to-the-target-element
1855-maximum-distance-between-a-pair-of-values
1861-rotating-the-box
1878-check-if-array-is-sorted-and-rotated
1878-get-biggest-three-rhombus-sums-in-a-grid
1914-cyclically-rotating-a-grid
1979-find-greatest-common-divisor-of-array
1980-find-unique-binary-string
2033-minimum-operations-to-make-a-uni-value-grid
2078-two-furthest-houses-with-different-colors
2126-destroying-asteroids
2144-minimum-cost-of-buying-candies-with-discount
2452-words-within-two-edits-of-dictionary
2463-minimum-total-distance-traveled
2515-shortest-distance-to-target-string-in-a-circular-array
2540-minimum-common-value
2553-separate-the-digits-in-an-array
2574-left-and-right-sum-differences
2615-sum-of-distances
2657-find-the-prefix-common-array-of-two-arrays
2751-robot-collisions
2770-maximum-number-of-jumps-to-reach-the-last-index
2784-check-if-array-is-good
2812-find-the-safest-path-in-a-grid
3043-find-the-length-of-the-longest-common-prefix
3070-count-submatrices-with-top-left-element-and-sum-less-than-k
3093-longest-common-suffix-queries
3161-block-placement-queries
3212-count-submatrices-with-equal-frequency-of-x-and-y
3225-maximum-score-from-grid-operations
3286-find-a-safe-walk-through-a-grid
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3300-minimum-element-after-replacement-with-digit-sum
3312-sorted-gcd-pair-queries
3336-find-the-number-of-subsequences-with-equal-gcd
3418-maximum-amount-of-money-robot-can-earn
3464-maximize-the-distance-between-points-on-a-square
3488-closest-equal-element-queries
3513-number-of-unique-xor-triplets-i
3532-path-existence-queries-in-a-graph-i
3534-path-existence-queries-in-a-graph-ii
3567-minimum-absolute-difference-in-sliding-submatrix
3620-network-recovery-pathways
3629-minimum-jumps-to-reach-end-via-prime-teleportation
3633-earliest-finish-time-for-land-and-water-rides-i
3643-flip-square-submatrix-vertically
3653-xor-after-range-multiplication-queries-i
3655-xor-after-range-multiplication-queries-ii
3660-jump-game-ix
3661-maximum-walls-destroyed-by-robots
3737-count-subarrays-with-majority-element-i
3740-minimum-distance-between-three-equal-elements-i
3741-minimum-distance-between-three-equal-elements-ii
3761-minimum-absolute-distance-between-mirror-pairs
3867-sum-of-gcd-of-formed-pairs

Stack

0094-binary-tree-inorder-traversal
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0234-palindrome-linked-list
1021-remove-outermost-parentheses
1081-smallest-subsequence-of-distinct-characters
2751-robot-collisions

Dynamic Programming

1013-fibonacci-number
1301-number-of-paths-with-max-score
1320-minimum-distance-to-type-a-word-using-two-fingers
1340-jump-game-v
1510-stone-game-iv
1871-jump-game-vii
1888-minimum-number-of-flips-to-make-the-binary-string-alternating
2463-minimum-total-distance-traveled
2770-maximum-number-of-jumps-to-reach-the-last-index
3129-find-all-possible-stable-binary-arrays-i
3130-find-all-possible-stable-binary-arrays-ii
3225-maximum-score-from-grid-operations
3302-find-the-lexicographically-smallest-valid-sequence
3336-find-the-number-of-subsequences-with-equal-gcd
3418-maximum-amount-of-money-robot-can-earn
3534-path-existence-queries-in-a-graph-ii
3620-network-recovery-pathways
3660-jump-game-ix
3661-maximum-walls-destroyed-by-robots
3751-total-waviness-of-numbers-in-range-i
3753-total-waviness-of-numbers-in-range-ii

Memoization

1013-fibonacci-number

Binary Search

0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array
0081-search-in-rotated-sorted-array-ii
0153-find-minimum-in-rotated-sorted-array
0154-find-minimum-in-rotated-sorted-array-ii
0540-single-element-in-a-sorted-array
0792-binary-search
1855-maximum-distance-between-a-pair-of-values
2540-minimum-common-value
2812-find-the-safest-path-in-a-grid
3161-block-placement-queries
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3312-sorted-gcd-pair-queries
3464-maximize-the-distance-between-points-on-a-square
3488-closest-equal-element-queries
3532-path-existence-queries-in-a-graph-i
3534-path-existence-queries-in-a-graph-ii
3600-maximize-spanning-tree-stability-with-upgrades
3620-network-recovery-pathways
3633-earliest-finish-time-for-land-and-water-rides-i
3661-maximum-walls-destroyed-by-robots

Tree

0094-binary-tree-inorder-traversal
0102-binary-tree-level-order-traversal
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0199-binary-tree-right-side-view

Depth-First Search

0094-binary-tree-inorder-traversal
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0199-binary-tree-right-side-view
1306-jump-game-iii
1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid
1722-minimize-hamming-distance-after-swap-operations
2492-minimum-score-of-a-path-between-two-cities
2685-count-the-number-of-complete-components

Binary Tree

0094-binary-tree-inorder-traversal
0102-binary-tree-level-order-traversal
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0199-binary-tree-right-side-view

Breadth-First Search

0102-binary-tree-level-order-traversal
0199-binary-tree-right-side-view
1306-jump-game-iii
1345-jump-game-iv
1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid
2492-minimum-score-of-a-path-between-two-cities
2685-count-the-number-of-complete-components
2812-find-the-safest-path-in-a-grid
3286-find-a-safe-walk-through-a-grid
3629-minimum-jumps-to-reach-end-via-prime-teleportation

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0874-walking-robot-simulation
1345-jump-game-iv
1674-minimum-moves-to-make-array-complementary
1980-find-unique-binary-string
2540-minimum-common-value
2615-sum-of-distances
2657-find-the-prefix-common-array-of-two-arrays
2784-check-if-array-is-good
2840-check-if-strings-can-be-made-equal-with-operations-ii
3043-find-the-length-of-the-longest-common-prefix
3120-count-the-number-of-special-characters-i
3121-count-the-number-of-special-characters-ii
3312-sorted-gcd-pair-queries
3488-closest-equal-element-queries
3532-path-existence-queries-in-a-graph-i
3629-minimum-jumps-to-reach-end-via-prime-teleportation
3737-count-subarrays-with-majority-element-i
3740-minimum-distance-between-three-equal-elements-i
3741-minimum-distance-between-three-equal-elements-ii
3761-minimum-absolute-distance-between-mirror-pairs

String

0003-longest-substring-without-repeating-characters
0657-robot-return-to-origin
0796-rotate-string
1021-remove-outermost-parentheses
1081-smallest-subsequence-of-distinct-characters
1320-minimum-distance-to-type-a-word-using-two-fingers
1415-the-k-th-lexicographical-string-of-all-happy-strings-of-length-n
1545-find-kth-bit-in-nth-binary-string
1689-partitioning-into-minimum-number-of-deci-binary-numbers
1758-minimum-changes-to-make-alternating-binary-string
1784-check-if-binary-string-has-at-most-one-segment-of-ones
1871-jump-game-vii
1888-minimum-number-of-flips-to-make-the-binary-string-alternating
1903-largest-odd-number-in-string
1980-find-unique-binary-string
2075-decode-the-slanted-ciphertext
2452-words-within-two-edits-of-dictionary
2515-shortest-distance-to-target-string-in-a-circular-array
2833-furthest-point-from-origin
2840-check-if-strings-can-be-made-equal-with-operations-ii
3043-find-the-length-of-the-longest-common-prefix
3093-longest-common-suffix-queries
3120-count-the-number-of-special-characters-i
3121-count-the-number-of-special-characters-ii
3302-find-the-lexicographically-smallest-valid-sequence
3474-lexicographically-smallest-generated-string
3499-maximize-active-section-with-trade-i
3614-process-string-with-special-operations-ii
3756-concatenate-non-zero-digits-and-multiply-by-sum-ii

Greedy

0455-assign-cookies
0860-lemonade-change
1081-smallest-subsequence-of-distinct-characters
1536-minimum-swaps-to-arrange-a-binary-grid
1665-minimum-initial-energy-to-finish-tasks
1689-partitioning-into-minimum-number-of-deci-binary-numbers
1727-largest-submatrix-with-rearrangements
1903-largest-odd-number-in-string
2078-two-furthest-houses-with-different-colors
2126-destroying-asteroids
2144-minimum-cost-of-buying-candies-with-discount
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3302-find-the-lexicographically-smallest-valid-sequence
3474-lexicographically-smallest-generated-string
3534-path-existence-queries-in-a-graph-ii
3600-maximize-spanning-tree-stability-with-upgrades
3633-earliest-finish-time-for-land-and-water-rides-i

Matrix

0048-rotate-image
1260-shift-2d-grid
1301-number-of-paths-with-max-score
1391-check-if-there-is-a-valid-path-in-a-grid
1536-minimum-swaps-to-arrange-a-binary-grid
1559-detect-cycles-in-2d-grid
1582-special-positions-in-a-binary-matrix
1727-largest-submatrix-with-rearrangements
1861-rotating-the-box
1878-get-biggest-three-rhombus-sums-in-a-grid
1914-cyclically-rotating-a-grid
2033-minimum-operations-to-make-a-uni-value-grid
2812-find-the-safest-path-in-a-grid
3070-count-submatrices-with-top-left-element-and-sum-less-than-k
3212-count-submatrices-with-equal-frequency-of-x-and-y
3225-maximum-score-from-grid-operations
3286-find-a-safe-walk-through-a-grid
3418-maximum-amount-of-money-robot-can-earn
3567-minimum-absolute-difference-in-sliding-submatrix
3643-flip-square-submatrix-vertically

Simulation

0657-robot-return-to-origin
0874-walking-robot-simulation
1260-shift-2d-grid
1545-find-kth-bit-in-nth-binary-string
1914-cyclically-rotating-a-grid
2069-walking-robot-simulation-ii
2075-decode-the-slanted-ciphertext
2553-separate-the-digits-in-an-array
2751-robot-collisions
3614-process-string-with-special-operations-ii
3653-xor-after-range-multiplication-queries-i
3867-sum-of-gcd-of-formed-pairs

Sliding Window

0003-longest-substring-without-repeating-characters
1871-jump-game-vii
1888-minimum-number-of-flips-to-make-the-binary-string-alternating

Backtracking

1415-the-k-th-lexicographical-string-of-all-happy-strings-of-length-n
1980-find-unique-binary-string

Prefix Sum

1674-minimum-moves-to-make-array-complementary
1871-jump-game-vii
1878-get-biggest-three-rhombus-sums-in-a-grid
2574-left-and-right-sum-differences
2615-sum-of-distances
3070-count-submatrices-with-top-left-element-and-sum-less-than-k
3129-find-all-possible-stable-binary-arrays-i
3130-find-all-possible-stable-binary-arrays-ii
3212-count-submatrices-with-equal-frequency-of-x-and-y
3225-maximum-score-from-grid-operations
3312-sorted-gcd-pair-queries
3737-count-subarrays-with-majority-element-i
3756-concatenate-non-zero-digits-and-multiply-by-sum-ii

Bit Manipulation

1009-complement-of-base-10-integer
2657-find-the-prefix-common-array-of-two-arrays
3513-number-of-unique-xor-triplets-i
3534-path-existence-queries-in-a-graph-ii

Union-Find

1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid
1722-minimize-hamming-distance-after-swap-operations
2492-minimum-score-of-a-path-between-two-cities
2685-count-the-number-of-complete-components
2812-find-the-safest-path-in-a-grid
3532-path-existence-queries-in-a-graph-i
3600-maximize-spanning-tree-stability-with-upgrades

Graph Theory

2492-minimum-score-of-a-path-between-two-cities
2685-count-the-number-of-complete-components
3286-find-a-safe-walk-through-a-grid
3532-path-existence-queries-in-a-graph-i
3534-path-existence-queries-in-a-graph-ii
3600-maximize-spanning-tree-stability-with-upgrades
3620-network-recovery-pathways

Minimum Spanning Tree

3600-maximize-spanning-tree-stability-with-upgrades

Heap (Priority Queue)

1878-get-biggest-three-rhombus-sums-in-a-grid
2812-find-the-safest-path-in-a-grid
3286-find-a-safe-walk-through-a-grid
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3620-network-recovery-pathways

Design

1622-fancy-sequence
2069-walking-robot-simulation-ii

Segment Tree

1622-fancy-sequence
3161-block-placement-queries
3737-count-subarrays-with-majority-element-i

Sorting

0455-assign-cookies
1288-remove-covered-intervals
1340-jump-game-v
1665-minimum-initial-energy-to-finish-tasks
1727-largest-submatrix-with-rearrangements
1878-get-biggest-three-rhombus-sums-in-a-grid
2033-minimum-operations-to-make-a-uni-value-grid
2126-destroying-asteroids
2144-minimum-cost-of-buying-candies-with-discount
2463-minimum-total-distance-traveled
2751-robot-collisions
2784-check-if-array-is-good
2840-check-if-strings-can-be-made-equal-with-operations-ii
3464-maximize-the-distance-between-points-on-a-square
3534-path-existence-queries-in-a-graph-ii
3567-minimum-absolute-difference-in-sliding-submatrix
3633-earliest-finish-time-for-land-and-water-rides-i
3661-maximum-walls-destroyed-by-robots
3867-sum-of-gcd-of-formed-pairs

String Matching

0796-rotate-string
3474-lexicographically-smallest-generated-string

Database

0584-find-customer-referee
0595-big-countries
1148-article-views-i
1683-invalid-tweets
1757-recyclable-and-low-fat-products

Divide and Conquer

3653-xor-after-range-multiplication-queries-i
3655-xor-after-range-multiplication-queries-ii
3737-count-subarrays-with-majority-element-i

Trie

2452-words-within-two-edits-of-dictionary
3043-find-the-length-of-the-longest-common-prefix
3093-longest-common-suffix-queries

Counting

2833-furthest-point-from-origin
3312-sorted-gcd-pair-queries
3737-count-subarrays-with-majority-element-i

Geometry

3464-maximize-the-distance-between-points-on-a-square

Number Theory

1979-find-greatest-common-divisor-of-array
3312-sorted-gcd-pair-queries
3336-find-the-number-of-subsequences-with-equal-gcd
3629-minimum-jumps-to-reach-end-via-prime-teleportation
3658-gcd-of-odd-and-even-sums
3867-sum-of-gcd-of-formed-pairs

Binary Indexed Tree

3161-block-placement-queries

Enumeration

3499-maximize-active-section-with-trade-i
3751-total-waviness-of-numbers-in-range-i

Merge Sort

3737-count-subarrays-with-majority-element-i

Shortest Path

3286-find-a-safe-walk-through-a-grid
3620-network-recovery-pathways

Topological Sort

3620-network-recovery-pathways

Combinatorics

3312-sorted-gcd-pair-queries

Monotonic Stack

1081-smallest-subsequence-of-distinct-characters

Minimax

1510-stone-game-iv

Game Theory

1510-stone-game-iv

Nim Game

1510-stone-game-iv

Sprague–Grundy Theorem

1510-stone-game-iv

Zero-Sum Game

1510-stone-game-iv