Traversal

Check if the Binary Tree contains a balanced BST of size K

Last Updated: 23 August 2021

Given a Binary Tree and a positive integer K. The task is to check whether the Balanced BST of size K exists in a given Binary Tree or not. ...read more

Minimum steps to convert all paths in matrix from top left to bottom right as palindromic paths

Last Updated: 24 March 2023

Given a matrix mat[][] with N rows and M columns. The task is to find the minimum number of changes required in the matrix such that every p ...read more

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Replace every node of a Linked list with the next greater element on right side

Last Updated: 15 September 2022

Given a linked list, the task is to find the Next Greater Element for every node of the linked list.Note: For nodes with no next greater ele ...read more

Linked List

Print all the super diagonal elements of the given square matrix

Last Updated: 13 September 2022

Given a square matrix mat[][] of size n * n. The task is to print all the elements which lie on the super-diagonal of the given matrix.Examp ...read more

Matrix

Compare sum of first N-1 elements to Nth element of an array

Last Updated: 07 June 2022

Given an array arr[] of size N, the task is to check whether the sum of first N - 1 element of the array is equal to the last element.Exampl ...read more

Element in a matrix starting from which anti-clockwise traversal ends at the last element

Last Updated: 12 December 2022

Given a mat[][] of size n X n, the task is to find an element X such that if the anti-clockwise traversal is begun from X then the final ele ...read more

Matrix

Competitive Programming

C++ Programs

Update adjacent nodes if the current node is zero in a Singly Linked List

Last Updated: 12 September 2022

Given a linked list. The task is to change the value of the previous and next node of a node to 0 if the current node is 0.Examples:Input : ...read more

Linked List

Constructive Algorithms

Coefficient of Range in a Binary Tree

Last Updated: 13 September 2021

Given a Binary Tree, the task is to find the Coefficient of Range in it.Range is defined as the difference between the maximum and minimum v...read more

Print all the levels with odd and even number of nodes in it | Set-2

Last Updated: 12 September 2022

Given an N-ary tree, print all the levels with odd and even number of nodes in it.Examples:For example consider the following tree ...read more

Print sum of matrix and its mirror image

Last Updated: 09 September 2022

You are given a matrix of order N*N. The task is to find the resultant matrix by adding the mirror image of given matrix with the matrix its ...read more

Sum and Product of the nodes of a Circular Singly Linked List which are divisible by K

Last Updated: 08 September 2022

Given a singly circular linked list. The task is to find the sum and product of nodes that are divisible by K of the given linked list.Examp...read more

Sum and Product of the nodes of a Singly Linked List which are divisible by K

Last Updated: 31 August 2023

Given a singly linked list. The task is to find the sum and product of all of the nodes of the given linked list which are divisible by a gi ...read more

Delete all the nodes from a doubly linked list that are smaller than a given value

Last Updated: 14 March 2023

Given a doubly linked list containing N nodes and a number K, the task is to delete all the nodes from the list that are smaller than the gi ...read more