Algorithm ID Problem Name Description Solution 1 Rotate Array Rotate an array of n elements to the right by k steps Java 2 Reverse Word Reverse String word by word Java 3 Polish Notation Reverse Polish Notation Evaluation Java 4 Tree Traversal Binary Tree Traversal (DFS) C++ 5 Binay Search Search Key in binary search tree C++ 6 Binary Serach Insert Binary Tree Insert Iterative C++ 7 Binary Tree Same Binary Tree Compare If Tree Is same or not C++ 8 Binary Tree Size and Height Get Binary Tree Size and Height C++ 9 Merge Sort Sort array using merge sort C++