From HackerRank
- Counting Valleys
- Sales by Match
- Jumping on the Clouds
- Repeated String
- 2D Arrays - DS
- Left Rotation
- New Year Chaos
- Minimum Swaps 2
- Array Manipulation
- Ransom Note
- Two Strings
- Sherlock and Anagrams
- Count Triplets
- Frequency Queries
- Lowest Common Ancestor
- Leap Day
- Kangaroo