Medium (4)

1. Two Sum
2. Sort Color
3. Majority Element
4. Kadane's Algorithm
5. Print Sub Array
6. Stock Buy And Sell
7. Rearrange Array Elements by Sign
8. Next Permuation
9. Array Leaders
10. Longest Consecutive Sequences
11. Set Zeros
12. Rotate Matrix 90 Degree
13. Print Spiral Manner