- 217. Contains Duplicate -> Python
- valid anagram -> ValidAnagram.java
- Two Sum -> Java -49. Group Anagrams -> Python
- top k frequent elements -> TopKelements.java, Python
- String Encode and Decode ->Python
- 238. Product of Array Except Self -> Python
- best-time-to-buy-and-sell-stock -> BuySellStock.java
- count-vowel-substrings-of-a-string -> CountVowelSubString.java
- find-minimum-in-rotated-sorted-array -> MinElementInRotatedSortedArray.java
- 295. Find Median from Data Stream -> Python
- merge-two-sorted-lists -> MergeLinkedList.java
- 2058. Find the Minimum and Maximum Number of Nodes Between Critical Points -> Python Java
- 2181. Merge Nodes in Between Zeros -> Python
- lowest-common-ancestor-of-a-binary-search-tree -> LowestCommonAncestor.java
- validate-binary-search-tree -> ValidBST.java
- kth-smallest-element-in-a-bst -> KthSmallestBst.java
- construct-binary-tree-from-preorder-and-inorder-traversal -> Java
- Binary Tree Maximum Path Sum -> Java
- 297. Serialize and Deserialize Binary Tree ->Python
- 200. Number of Islands -> Python, Java
- 207. Course Schedule -> Python
- Alien Dictionary -> Python
- Valid Tree -> Python
- Count Connected Components -> Python
- 198. House Robber -> Java
- 213. House Robber II -> Python
- 300. Longest Increasing Subsequence -> Python
- 5. Longest Palindromic Substring -> Python
- 647. Palindromic Substrings-> Python
- 322. Coin Change -> Python
- 139. Word Break -> Python
- 62. Unique Paths -> Python
- 268. Missing Number->Python Java
- 54. Spiral Matrix-> Python
- 73. Set Matrix Zeroes ->Python
- 48. Rotate Image-> Python
- valid-word -> Java