problem Design an algorithm and write code to find the first common ancestor of two nodes in a binary tree. Avoid storing additional nodes in a data structure. NOTE: This is not necessarily a binary search tree. how to solve Starting from …

problem You are given a binary tree in which each node contains an integer value(which might be positive or negative). Design an algorithm to count the number of paths that sum to a given value. The path does not need to start or end at th…

problem Implement a function to check if a binary tree is balanced. how to solve A balanced tree is defined to be a tree such that the heights of the two subtrees of any node never differ by more than one. So I implement a function fetchHe…