## Iterative approach to check for children sum property in a Binary Tree

Given a binary tree, write a function that returns true if the tree satisfies below property: For every node, data value must be equal to… Read More »

Given a binary tree, write a function that returns true if the tree satisfies below property: For every node, data value must be equal to… Read More »

Given two integers A and B, the task is to find the minimum positive integer N such that N is divisible by A and the… Read More »

Given the root of a binary tree and a key x in it, find the distance of the given key from the root node. Distance… Read More »

Given a Queue of integers. The task is to check if consecutive elements in the queue are pairwise consecutive. Examples: Input: 1 2 5 6… Read More »

Given an array of elements, the task is to insert these elements in level order and construct a tree. Input : arr[] = {10, 20,… Read More »

Given a binary tree and data value of a node. The task is to find the sum of cousin nodes of given node. If given… Read More »

Given an array of integers and a number K with initial and final values. Your task is to find the minimum number of steps required… Read More »

Given lengths of n rods in an array a[]. If any person picks any rod, half of the longest rod (or (max + 1) /… Read More »

Write a function to print spiral order traversal of a tree. For below tree, function should print 1, 2, 3, 4, 5, 6, 7. You… Read More »

Given a root node to a tree, find the sum of all the leaf nodes which are at maximum depth from root node. Example: 1… Read More »

Given start, end and an array of N numbers. At each step, start is multiplied with any number in the array and then mod operation… Read More »

Given N numbers which have a permutation of first N numbers. In a single operation, any prefix can be reversed. The task is to find… Read More »

Given a binary tree and the two nodes say ‘a’ and ‘b’, determine whether two given nodes are cousins of each other or not. Two… Read More »

Given two binary trees, the task is to check whether the two binary trees is a mirror of each other or not. Mirror of a… Read More »

Given a Binary Tree having positive and negative nodes, the task is to find maximum product level in it. Examples: Input : 4 / \… Read More »