LeetCode

A collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

LeetCode Topics

Tree

0100-same-tree
0101-symmetric-tree
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0111-minimum-depth-of-binary-tree
0112-path-sum
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0226-invert-binary-tree
0404-sum-of-left-leaves
0437-path-sum-iii
0530-minimum-absolute-difference-in-bst
0783-search-in-a-binary-search-tree
0904-leaf-similar-trees
1035-cousins-in-binary-tree
1474-longest-zigzag-path-in-a-binary-tree
1498-find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
2416-evaluate-boolean-binary-tree

Depth-First Search

0100-same-tree
0101-symmetric-tree
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0111-minimum-depth-of-binary-tree
0112-path-sum
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0226-invert-binary-tree
0404-sum-of-left-leaves
0437-path-sum-iii
0530-minimum-absolute-difference-in-bst
0904-leaf-similar-trees
1035-cousins-in-binary-tree
1474-longest-zigzag-path-in-a-binary-tree
1498-find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
2121-find-if-path-exists-in-graph
2416-evaluate-boolean-binary-tree

Breadth-First Search

0100-same-tree
0101-symmetric-tree
0104-maximum-depth-of-binary-tree
0111-minimum-depth-of-binary-tree
0112-path-sum
0226-invert-binary-tree
0404-sum-of-left-leaves
0530-minimum-absolute-difference-in-bst
1035-cousins-in-binary-tree
1498-find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
2121-find-if-path-exists-in-graph

Binary Tree

0100-same-tree
0101-symmetric-tree
0104-maximum-depth-of-binary-tree
0110-balanced-binary-tree
0111-minimum-depth-of-binary-tree
0112-path-sum
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal
0226-invert-binary-tree
0404-sum-of-left-leaves
0437-path-sum-iii
0530-minimum-absolute-difference-in-bst
0783-search-in-a-binary-search-tree
0904-leaf-similar-trees
1035-cousins-in-binary-tree
1474-longest-zigzag-path-in-a-binary-tree
1498-find-a-corresponding-node-of-a-binary-tree-in-a-clone-of-that-tree
2416-evaluate-boolean-binary-tree

Array

0001-two-sum
0027-remove-element
0121-best-time-to-buy-and-sell-stock
0283-move-zeroes

Two Pointers

0027-remove-element
0125-valid-palindrome
0283-move-zeroes
0345-reverse-vowels-of-a-string
0392-is-subsequence
0680-valid-palindrome-ii
1894-merge-strings-alternately

Stack

0020-valid-parentheses
0144-binary-tree-preorder-traversal
0145-binary-tree-postorder-traversal

Union Find

2121-find-if-path-exists-in-graph

Graph

2121-find-if-path-exists-in-graph

String

0020-valid-parentheses
0125-valid-palindrome
0242-valid-anagram
0345-reverse-vowels-of-a-string
0392-is-subsequence
0680-valid-palindrome-ii
1894-merge-strings-alternately

Hash Table

0001-two-sum
0242-valid-anagram

Linked List

0021-merge-two-sorted-lists

Recursion

0021-merge-two-sorted-lists

Dynamic Programming

0121-best-time-to-buy-and-sell-stock
0392-is-subsequence
1474-longest-zigzag-path-in-a-binary-tree

Sorting

0242-valid-anagram

Binary Search Tree

0530-minimum-absolute-difference-in-bst
0783-search-in-a-binary-search-tree

Database

0175-combine-two-tables

Greedy

0680-valid-palindrome-ii