Min Query
Concepts Used Segment Trees Difficulty Level Easy Problem Statement : Given an array of N elements and Q queries. In each query he is given two values l, r. We...
Plagiarism Test
Concepts Used BFS , Recursion Difficulty Level Easy Problem Statement : Given a binary tree, and a node X, we have to sum all the nodes except the node X....
Check SumTree
Concepts Used DFS , Recursion Difficulty Level Hard Problem Statement : "A SumTree is a Binary Tree where the value of a node is equal to sum of the nodes...
Valid Binary Search Tree
Concepts Used DFS , Recursion Difficulty Level Medium Problem Statement : Given a binary tree, determine if it is a valid binary search tree (BST). See original problem statement here...
Convert SumTree
Concepts Used DFS , Recursion Difficulty Level Medium Problem Statement : Given a binary tree and the task is to convert that tree into SumTree. See original problem statement here...
Mirror Reflection
Concepts Used DFS , Recursion Difficulty Level Medium Problem Statement : Given two binary trees, we need to find whether one tree in the pair is the mirror image of...
Maximum Turns
Concepts Used DFS , Recursion Difficulty Level Hard Problem Statement : Given a binary tree, find the path length having maximum number of bends. See original problem statement here Solution...
LevelOrder Traversal
Concepts Used BFS , Queue Difficulty Level Easy Problem Statement : Given a binary tree, our task is to print the level order traversal of the tree. See original problem...
Ancestors
Concepts Used DFS , Recursion Difficulty Level Medium Problem Statement : "Lowest common ancestor of two node n1 and n2 is the lowest node in the tree that has both...
Inorder Traversal
Concepts Used DFS , Recursion, Stack Difficulty Level Easy Problem Statement : Given a binary tree, our task is to print the inorder traversal of the tree. See original problem...