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
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
1622-fancy-sequence
1878-get-biggest-three-rhombus-sums-in-a-grid
2033-minimum-operations-to-make-a-uni-value-grid
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3464-maximize-the-distance-between-points-on-a-square
3761-minimum-absolute-distance-between-mirror-pairs
3783-mirror-distance-of-an-integer

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
0234-palindrome-linked-list
0455-assign-cookies
1855-maximum-distance-between-a-pair-of-values
2216-delete-the-middle-node-of-a-linked-list
3643-flip-square-submatrix-vertically

Array

0001-two-sum
0026-remove-duplicates-from-sorted-array
0027-remove-element
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
0455-assign-cookies
0540-single-element-in-a-sorted-array
0792-binary-search
0860-lemonade-change
0874-walking-robot-simulation
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
1722-minimize-hamming-distance-after-swap-operations
1727-largest-submatrix-with-rearrangements
1848-minimum-distance-to-the-target-element
1855-maximum-distance-between-a-pair-of-values
1878-check-if-array-is-sorted-and-rotated
1878-get-biggest-three-rhombus-sums-in-a-grid
1980-find-unique-binary-string
2033-minimum-operations-to-make-a-uni-value-grid
2078-two-furthest-houses-with-different-colors
2452-words-within-two-edits-of-dictionary
2463-minimum-total-distance-traveled
2515-shortest-distance-to-target-string-in-a-circular-array
2615-sum-of-distances
2751-robot-collisions
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
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3418-maximum-amount-of-money-robot-can-earn
3464-maximize-the-distance-between-points-on-a-square
3488-closest-equal-element-queries
3567-minimum-absolute-difference-in-sliding-submatrix
3643-flip-square-submatrix-vertically
3653-xor-after-range-multiplication-queries-i
3655-xor-after-range-multiplication-queries-ii
3661-maximum-walls-destroyed-by-robots
3740-minimum-distance-between-three-equal-elements-i
3741-minimum-distance-between-three-equal-elements-ii
3761-minimum-absolute-distance-between-mirror-pairs

Stack

0094-binary-tree-inorder-traversal
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0234-palindrome-linked-list
2751-robot-collisions

Dynamic Programming

1013-fibonacci-number
1320-minimum-distance-to-type-a-word-using-two-fingers
1888-minimum-number-of-flips-to-make-the-binary-string-alternating
2463-minimum-total-distance-traveled
3129-find-all-possible-stable-binary-arrays-i
3130-find-all-possible-stable-binary-arrays-ii
3225-maximum-score-from-grid-operations
3418-maximum-amount-of-money-robot-can-earn
3661-maximum-walls-destroyed-by-robots

Memoization

1013-fibonacci-number

Binary Search

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
0540-single-element-in-a-sorted-array
0792-binary-search
1855-maximum-distance-between-a-pair-of-values
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3464-maximize-the-distance-between-points-on-a-square
3488-closest-equal-element-queries
3600-maximize-spanning-tree-stability-with-upgrades
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
1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid
1722-minimize-hamming-distance-after-swap-operations

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
1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0874-walking-robot-simulation
1980-find-unique-binary-string
2615-sum-of-distances
2840-check-if-strings-can-be-made-equal-with-operations-ii
3488-closest-equal-element-queries
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
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
1888-minimum-number-of-flips-to-make-the-binary-string-alternating
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
3474-lexicographically-smallest-generated-string

Greedy

0455-assign-cookies
0860-lemonade-change
1536-minimum-swaps-to-arrange-a-binary-grid
1689-partitioning-into-minimum-number-of-deci-binary-numbers
1727-largest-submatrix-with-rearrangements
2078-two-furthest-houses-with-different-colors
3296-minimum-number-of-seconds-to-make-mountain-height-zero
3474-lexicographically-smallest-generated-string
3600-maximize-spanning-tree-stability-with-upgrades

Matrix

0048-rotate-image
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
1878-get-biggest-three-rhombus-sums-in-a-grid
2033-minimum-operations-to-make-a-uni-value-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
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
1545-find-kth-bit-in-nth-binary-string
2069-walking-robot-simulation-ii
2075-decode-the-slanted-ciphertext
2751-robot-collisions
3653-xor-after-range-multiplication-queries-i

Sliding Window

0003-longest-substring-without-repeating-characters
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

1878-get-biggest-three-rhombus-sums-in-a-grid
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

Bit Manipulation

1009-complement-of-base-10-integer

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

Graph Theory

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

Minimum Spanning Tree

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

Heap (Priority Queue)

1878-get-biggest-three-rhombus-sums-in-a-grid
3296-minimum-number-of-seconds-to-make-mountain-height-zero

Design

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

Segment Tree

1622-fancy-sequence

Sorting

0455-assign-cookies
1727-largest-submatrix-with-rearrangements
1878-get-biggest-three-rhombus-sums-in-a-grid
2033-minimum-operations-to-make-a-uni-value-grid
2463-minimum-total-distance-traveled
2751-robot-collisions
2840-check-if-strings-can-be-made-equal-with-operations-ii
3464-maximize-the-distance-between-points-on-a-square
3567-minimum-absolute-difference-in-sliding-submatrix
3661-maximum-walls-destroyed-by-robots

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

Trie

2452-words-within-two-edits-of-dictionary

Counting

2833-furthest-point-from-origin

Geometry

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