- Valid Paranthesis, solution
- Maximal Square [DP] , solution
- Diameter of a Binary Tree
- Binary Tree Maximum Path Sum
- Binary Tree Check if valid sequence from root to leaf
- Longest Valid Parentheses
- Remove Invalid Parentheses
- Maximum circular subarray sum , Solution
- detect cycle in a linked list , Solution
- NGE
- Deep Copy Linked List, Solution
- Reducing Dishes,Solution
- K-different subarrays
- Possible Bipartition , Solution
- Course Schedule, Solution
- Russian Doll Envelope, Solution
- Distinct Subsequences
- Minimum Cost for Tickets [DP]
- Valid perfect square [Bin Search]. Solution
- Triangle [DP]. Solution
- Dungeon Game [DP, BS]. Solution
- Split Array and minimize largest sum, Solution
- Permutation Sequence , Solution
- Longest Duplicate Substring , Solution
- Reconstruct Itinerary, Eulars path, Blog
- Odd Even Jumps, Solution
- Best Time to Buy and sell stocks, Solution
- Non Overlapping Intervals, Solution
- Find median of two sorted arrays using binary search, Solution
- Minimum Number of Increments on Subarrays to Form a Target Array Solution
- Counting Bits , Solution
- Find Median from Data Stream , Solution
- 4 Sum , Solution
- 2 Keys Keyboard , Solution
- Island Perimeter ,Solution
- Minimum Number of Flips , Solution
- Detect Skyline , Solution