Given two binary trees T and S, check whether tree S has exactly the same structure and node values with a subtree of T, i.e., check if tree S is a subtree of the tree T.

You are given an N * N matrix of integers where each row and each column is sorted in increas...

You are given two Singly Linked List of integers, which are merging at some node of a third linked list.

Your task is to find the data of the node at which merging starts. If ...

You are given a binary search tree and an integer ‘S’. Your task is to find all the pairs of nodes in the BST which sum to the value ‘S’. If no such pair exists, then print -1 - 1.

Note:

You have been given a binary tree of integers.

Your task is to check if it is a binary heap tree or not.

Note:

A binary tree is a tree in whi...

You are given two strings 'S' and 'T' of lengths 'N' and 'M' respectively. Find the "Edit Distance" between the strings.