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Check if binary tree is a sum tree
In this tutorial we shall check if the tree is a sum tree or not. Problem Statement: You are given the root node of a binary tree. You need to check if that tree is a sum tree or not. Example: Consider...
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Add all the node values in a Binary Tree or Sum of a Binary tree
In this chapter, we shall see how to add all the nodes value. Problem Statement: Given a binary tree root node, return the sum of all the nodes of the tree. Example: Consider the tree below: The total...
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Print the number of leaf nodes in a binary tree
In this chapter we shall print the number of leaf nodes in a binary tree. Problem Statement: You are given the root node of the tree. You need to return the total number of leaf nodes present in that...
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Print all the paths from root node to leaf node
In this chapter we shall see how to print all the paths from root to leaf nodes. Problem Statement: You are given the root node of a binary tree, you need to print all the paths from root node to leaf...
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Print the nodes at k distance from the root of a binary tree
In this tutorial we shall see how to print all the nodes that is k distance from root. Problem statement: Given the root node and the distance k, print all the nodes that are at distance k from root...
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Dynamic Programming: Longest Increasing Subsequence
In this tutorial we shall look at longest increasing subsequence and we shall solve it by using Dynamic Programming. Problem Statement: You are given an array of integers; you need to find the longest...
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Longest Bitonic Subsequence
In this tutorial we shall solve longest Bitonic subsequence using DP. Before solving the question, let’s understand what does Bitonic means. Bitonic is a sequence where the number increases at certain...
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Get Max Coin In Game problem.
In this chapter we shall solve how to get maximum coin in a game problem with help of DP. Problem Statement: You and your friend are playing a game to pick numbers from an array of even length. You...
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Rod Cutting Problem
In this tutorial we shall learn about rod cutting problem. Problem statement: You are given a rod of length n and you need to cut the cod in such a way that you need to sell It for maximum profit. You...
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