leetcode JavaScript Solutions

problem on leet code	solution	tags	youtube video
110. Balanced Binary Tree	solution	easy, bfs, trees
102. Binary Tree Level Order Traversal	solution	Medium, bfs, trees
107. Binary Tree Level Order Traversal II	solution	easy, bfs, trees
101. Symmetric Tree	solution	easy, dfs, trees
103. Binary Tree Zigzag Level Order Traversal	solution	Medium, bfs, trees
199. Binary Tree Right Side View	solution	Medium, bfs, trees
111. Minimum Depth of Binary Tree	solution	Easy, dfs, trees
112. Path Sum	solution	Easy, bfs, trees
113. Path Sum II	solution	Medium, bfs, backtrack, trees
114. Flatten Binary Tree to Linked List	solution	Medium, bfs, trees
100. Same Tree	solution	Easy, trees, bfs
110. Balanced Binary Tree	solution	easy, tree, dfs
1. Two Sum	solution	Easy, HashTable
136. Single Number	solution	Easy, HashTable
202. Happy Number	solution	Easy, Math, HashTable
217. Contains Duplicate	solution	Easy, HashTable, Sets
219. Contains Duplicate II	solution	Easy, HashTable
1207. Unique Number of Occurrences	solution	Easy, HashTable
13. Roman to Integer	solution	Easy, Strings
151. Reverse Words in a String	solution	Medium, Strings
14. Longest Common Prefix	solution	Easy, Strings
67. Add Binary	solution	Easy, Strings
22. Generate Parentheses	solution	Medium, Backtrack, Strings
53. Maximum Subarray	solution	Easy, Dynamic Programming
121. Best Time to Buy and Sell Stock	solution	Easy, Dynamic Programming
122. Best Time to Buy and Sell Stock II	solution	Easy, Dynamic Programming
62. Unique Paths	solution	Medium, Dynamic Programming
120. Triangle	solution	Medium, Dynamic Programming
300. Longest Increasing Subsequence	solution 1, solution 2	Medium, Dynamic Programming
322. Coin Change	solution	Medium, Dynamic Programming
518. Coin Change 2	solution	Medium, Dynamic Programming	https://youtu.be/b-8MBeJBk8Q
72. Edit Distance	solution	Hard, Dynamic Programming	https://youtu.be/PzKkjix7Mhk
1402. Reducing Dishes	solution	Hard, Dynamic Programming
49. Group Anagrams	solution	Medium, HashTable
283. Move Zeroes	solution	Easy, Array
844. Backspace String Compare	solution	Easy, String, Stack
155. Min Stack	solution	Easy, Array, Stack
543. Diameter of Binary Tree	solution	Easy, Trees, DFS
5. Longest Palindromic Substring	solution	Medium, Strings
144. Binary Tree Preorder Traversal	solution	Medium, dfs, trees
94. Binary Tree Inorder Traversal	solution	Medium, dfs, trees
739. Daily Temperatures	solution	Medium, Stack, Arrays
3. Longest Substring Without Repeating Characters	solution	Medium, String, Arrays
2. Add Two Numbers	solution	Medium, LinkedList
46. Permutations	solution	Medium, Backtracking	https://youtu.be/o_U2ctVnH2g
47. Permutations II	solution	Medium, Backtracking	https://youtu.be/F30kIMXls9U
39. Combination Sum	solution	Medium, Backtracking	https://youtu.be/2kWl_LRrUEc
40. Combination Sum II	solution	Medium, Backtracking	https://youtu.be/2kWl_LRrUEc
216. Combination Sum III	solution	Medium, Backtracking
51. N-Queens	solution	Hard, Backtracking	https://youtu.be/4gS86fJHBbg
52. N-Queens II	solution	Hard, Backtracking	https://youtu.be/4gS86fJHBbg
230. Kth Smallest Element in a BST	solution	Medium, Binary Search Tree, dfs
56. Merge Intervals	solution	Medium, Arrays
133. Clone Graph	solution	Medium, Graph
841. Keys and Rooms	solution	Medium, Graph
797. All Paths From Source to Target	solution	Medium, Graph, Backtracking	https://youtu.be/2nU4OxMovOY
17. Letter Combinations of a Phone Number	solution	Medium, Graph, Backtracking
242. Valid Anagram	solution	Easy, Hash Table, string
704. Binary Search	solution	Easy, Binary search
1768. Merge Strings Alternately	solution	Easy, Arrays
1431. Kids With the Greatest Number of Candies	solution	Easy, Arrays
1071. Greatest Common Divisor of Strings	solution	Easy, Strings
128. Longest Consecutive Sequence	solution	Medium, Array
347. Top K Frequent Elements	solution	Medium, Hash table
238. Product of Array Except Self	solution	Medium, Array
125. Valid Palindrome	solution	Easy, String, TwoPointers
167. Two Sum II - Input Array Is Sorted	solution	Easy, BinarySearch, TwoPointers
11. Container With Most Water	solution	Medium, Greedy, TwoPointers
15. 3Sum	solution	Medium, Sorting, TwoPointers