Problems

1.Min Stack2. Max Stack3.Valid Parentheses4.Evaluate Reverse Polish Notation5.Infix And Prefix and Postfix Conversions6.Next Greater Element I7.Next Greater Element II8.Sliding Window Maximum9.Gas Station (Circular Tour Problem)10.Daily Temperatures11.Decode String12. Largest Rectangle in Histogram13. Maximal Rectangle14. Minimum Remove to Make Valid Parentheses15. Map of Highest Peak16. Longest Valid Parentheses17. Online Stock Span18. Score of Parentheses19. Remove K Digits(imp)20. Design a Stack With Increment Operation21. Final Prices With a Special Discount in a Shop22. Valid Parenthesis String23. Reveal Cards In Increasing Order24. Remove All Adjacent Duplicates In String25. Number of Visible People in a Queue26.Number following a pattern