Medium Complexity Problems

Strings and Arrays

1. Longest Palindrome (Hard)
2. Longest Prefix
3. Longest Repeating Character
4. Merge Sorted Arrays
5. Substring Exists
6. Substring with non repeating character
7. Product of array except self
8. ATM - Count Denominations
9. Best Time to buy and Sell

Dynamic Programming

1. Coin Change

Graphs

1. BFS
2. DFS

LinkedList

1. Create double linkedList
2. Create single linkedlist
3. LRU Cache

Stack

1. Fibonacci
2. Max Min in a Stack

---

A lot of coding problem solutions, are on practice branch

https://github.com/psahni/algo_and_problem_solving/tree/practice