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Leetcode

Leetcode Submissions

LeetCode Topics

Dynamic Programming

0005-longest-palindromic-substring
0121-best-time-to-buy-and-sell-stock
0122-best-time-to-buy-and-sell-stock-ii
0124-binary-tree-maximum-path-sum
0338-counting-bits
0392-is-subsequence

Bit Manipulation

0078-subsets
0090-subsets-ii
0190-reverse-bits
0268-missing-number
0338-counting-bits

Linked List

0114-flatten-binary-tree-to-linked-list
0206-reverse-linked-list

Recursion

0050-powx-n
0206-reverse-linked-list

Hash Table

0013-roman-to-integer
0105-construct-binary-tree-from-preorder-and-inorder-traversal
0106-construct-binary-tree-from-inorder-and-postorder-traversal
0133-clone-graph
0205-isomorphic-strings
0268-missing-number
0383-ransom-note
0567-permutation-in-string

String

0005-longest-palindromic-substring
0013-roman-to-integer
0014-longest-common-prefix
0028-find-the-index-of-the-first-occurrence-in-a-string
0151-reverse-words-in-a-string
0205-isomorphic-strings
0383-ransom-note
0392-is-subsequence
0567-permutation-in-string

Tree

0098-validate-binary-search-tree
0100-same-tree
0102-binary-tree-level-order-traversal
0104-maximum-depth-of-binary-tree
0105-construct-binary-tree-from-preorder-and-inorder-traversal
0106-construct-binary-tree-from-inorder-and-postorder-traversal
0110-balanced-binary-tree
0114-flatten-binary-tree-to-linked-list
0124-binary-tree-maximum-path-sum
0199-binary-tree-right-side-view
0226-invert-binary-tree
0230-kth-smallest-element-in-a-bst
0235-lowest-common-ancestor-of-a-binary-search-tree
0236-lowest-common-ancestor-of-a-binary-tree
0563-binary-tree-tilt
1544-count-good-nodes-in-binary-tree

Depth-First Search

0098-validate-binary-search-tree
0100-same-tree
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0114-flatten-binary-tree-to-linked-list
0124-binary-tree-maximum-path-sum
0133-clone-graph
0199-binary-tree-right-side-view
0200-number-of-islands
0226-invert-binary-tree
0230-kth-smallest-element-in-a-bst
0235-lowest-common-ancestor-of-a-binary-search-tree
0236-lowest-common-ancestor-of-a-binary-tree
0417-pacific-atlantic-water-flow
0563-binary-tree-tilt
0695-max-area-of-island
1544-count-good-nodes-in-binary-tree

Binary Search Tree

0098-validate-binary-search-tree
0230-kth-smallest-element-in-a-bst
0235-lowest-common-ancestor-of-a-binary-search-tree
0268-missing-number

Binary Tree

0098-validate-binary-search-tree
0100-same-tree
0102-binary-tree-level-order-traversal
0104-maximum-depth-of-binary-tree
0105-construct-binary-tree-from-preorder-and-inorder-traversal
0106-construct-binary-tree-from-inorder-and-postorder-traversal
0110-balanced-binary-tree
0114-flatten-binary-tree-to-linked-list
0124-binary-tree-maximum-path-sum
0199-binary-tree-right-side-view
0226-invert-binary-tree
0230-kth-smallest-element-in-a-bst
0235-lowest-common-ancestor-of-a-binary-search-tree
0236-lowest-common-ancestor-of-a-binary-tree
0563-binary-tree-tilt
1544-count-good-nodes-in-binary-tree

Divide and Conquer

0105-construct-binary-tree-from-preorder-and-inorder-traversal
0106-construct-binary-tree-from-inorder-and-postorder-traversal
0190-reverse-bits

Array

0011-container-with-most-water
0039-combination-sum
0046-permutations
0078-subsets
0088-merge-sorted-array
0090-subsets-ii
0105-construct-binary-tree-from-preorder-and-inorder-traversal
0106-construct-binary-tree-from-inorder-and-postorder-traversal
0121-best-time-to-buy-and-sell-stock
0122-best-time-to-buy-and-sell-stock-ii
0134-gas-station
0200-number-of-islands
0252-meeting-rooms
0268-missing-number
0286-walls-and-gates
0417-pacific-atlantic-water-flow
0695-max-area-of-island
1036-rotting-oranges

Math

0013-roman-to-integer
0050-powx-n
0268-missing-number

Sorting

0088-merge-sorted-array
0252-meeting-rooms
0268-missing-number

Breadth-First Search

0100-same-tree
0102-binary-tree-level-order-traversal
0104-maximum-depth-of-binary-tree
0133-clone-graph
0199-binary-tree-right-side-view
0200-number-of-islands
0226-invert-binary-tree
0286-walls-and-gates
0417-pacific-atlantic-water-flow
0695-max-area-of-island
1036-rotting-oranges
1544-count-good-nodes-in-binary-tree

Database

0175-combine-two-tables
0181-employees-earning-more-than-their-managers
0182-duplicate-emails
0183-customers-who-never-order
0197-rising-temperature

Backtracking

0039-combination-sum
0046-permutations
0078-subsets
0090-subsets-ii

Union Find

0200-number-of-islands
0695-max-area-of-island

Matrix

0200-number-of-islands
0286-walls-and-gates
0417-pacific-atlantic-water-flow
0695-max-area-of-island
1036-rotting-oranges

Graph

0133-clone-graph

Two Pointers

0005-longest-palindromic-substring
0011-container-with-most-water
0028-find-the-index-of-the-first-occurrence-in-a-string
0088-merge-sorted-array
0151-reverse-words-in-a-string
0392-is-subsequence
0567-permutation-in-string

Sliding Window

0567-permutation-in-string

Greedy

0011-container-with-most-water
0122-best-time-to-buy-and-sell-stock-ii
0134-gas-station

String Matching

0028-find-the-index-of-the-first-occurrence-in-a-string

Trie

0014-longest-common-prefix

Counting

0383-ransom-note

Stack

0114-flatten-binary-tree-to-linked-list

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