You are given a non empty binary tree and a key value, you need to return the level of the node with the given key

# Category: Practice Problems

Practice Problems related to technical Interviews

## Maximum Path Sum

You are given a non-empty binary tree, you need to return the maximum path sum. A path, in this problem, is defined as a sequence

## Spiral Order Traversal

You are given a N x N matrix, you need to perform a spiral order traversal and print the elements of the matrix in that

## Is given Tree a BST or not?

You are given a binary tree, you need to determine if the tree is a valid BST or not? For a tree to be a

## Least Common Ancestor

You are given a Binary Tree and two nodes N1 and N2, you need to return the least common ancestor of N1 and N2. The

## Diameter of a Binary Tree

The diameter or width of a tree is the count of nodes in the longest path from one leaf to another. Given a binary tree,