Stack Queue

1. Implement a circular queue using an array of fixed size - CircularQueue.java
2. Find maximum size rectangle in histogram - MaximumHistogram.java
3. Given absolute unix like path simply it - SimplyPath.java
4. Reverse stack using recursion - ReverseStackUsingRecursion.java
5. Given a string with unbalanced brackets how do you remove minimum number of extra brackets so that you are left with balanced brackets in the string - RemoveExtraBrackets.java
6. Remove duplicates from a string while maintaining order and getting lexicographically smallest string - RemoveDuplicateMaintainingOrder.java
7. Find median in stream of numbers - MedianFinder.java