SDE - 1

You have been given a Binary Tree of integers and an integer 'X'. Find all the triplets in the tree whose sum is strictly greater than 'X'. The nodes in the triplet must hold the relationship of grandparent-parent-child.

For example:

For the given binary tree and X = 9

{1, 3, 6} is a valid triplet because 6 is a node whose parent is 3 and grand-parent is 1. Also, the sum of these nodes is 1 + 3 + 6 = 10 which is strictly greater than X = 9.

You have been given a Binary Tree of 'n' nodes, where the nodes have integer values

Print the left view of the binary tree.

Example :

If the input tree is as depicted in the picture: 

The Left View of the tree will be:  2 35 2 

A thief wants to loot houses. He knows the amount of money in each house. He cannot loot two consecutive houses. Find the maximum amount of money he can loot.

What is Rest API?

You have been given a Binary Tree of integers. You are supposed to return the level order traversal of the given tree.

For example:

For the given binary tree

The level order traversal will be {1,2,3,4,5,6,7}.

You are given an arbitrary binary tree consisting of N nodes numbered from 1 to N, an integer 'K', and a node 'TARGET_NODE_VAL' from the tree. You need to find the Kth ancestor of the node 'TARGET_NODE_VAL'. If there is no such ancestor, then print -1.

The Kth ancestor of a node in a binary tree is the Kth node in the path going up from the given node to the root of the tree. Refer to sample test cases for further explanation.

Note:

1. The given node 'TARGET_NODE_VAL' is always present in the tree.
2. The value of each node in the tree is unique.
3. Notice that the Kth ancestor node if present will always be unique.