## Longest sub-array whose product is 0

Given an array arr[] of integer elements, the task is to find the length of the longest sub-array whose product is 0. Examples: Input: arr[]… Read More »

## Print Binary Tree levels in sorted order | Set 3 (Tree given as array)

Given a Complete Binary Tree as an array, the task is to print all of its levels in sorted order. Examples: Input: arr[] = {7,… Read More »

## Schedule elevator to reduce the total time taken

Given an integer k and an array arr[] representing the destination floors for N people waiting currently at the ground floor and k is the… Read More »

## Program to copy the contents of one array into another in the reverse order

Given an array, the task is to copy these array elements into another array in reverse array. Examples: Input: array: 1 2 3 4 5… Read More »

## Sort the array in a given index range

Given an array arr[] of N integers and an index range [a, b]. The task is to sort the array in this given index range… Read More »

## Extract unique objects by attribute from array of objects.

Given an array of objects and the task is to return the unique object by the attribute. Examples: Input: [ { name: ‘Geeks’, id: 10… Read More »

## Check if array can be sorted with one swap

Given an array containing N elements. Find if it is possible to sort it in non-decreasing order using atmost one swap. Examples: Input : arr[]… Read More »

## Problem of 8 Neighbours of an element in a 2-D Matrix

Given a 2-D Matrix and an integer ‘K’, the task is to predict the matrix after ‘K’ iterations given as follows: An element 1 in… Read More »

## Check whether an Array is Subarray of another Array

Given two arrays A[] and B[] consisting of and integers. The task is to check whether the array B[] is a subarray of the array… Read More »

## Difference between a Static Queue and a Singly Linked List

Static Queue: A queue is an ordered list of elements. It always works in first in first out(FIFO) fashion. All the elements get inserted at… Read More »

## Smallest Integer to be inserted to have equal sums

Given an array of positive integers, find the smallest non-negative integer (i.e. greater than or equal to zero) that can be placed between any two… Read More »

## Pair with maximum difference in a Matrix

Given a NxM matrix with N rows and M columns of positive integers. The task is to find the pair with the maximum difference in… Read More »

## Pair with maximum sum in a Matrix

Given a NxM matrix with N rows and M columns of positive integers. The task is to find the sum of pair with maximum sum… Read More »

## Check if it is possible to create a palindrome string from given N

Given a number N. The task is to create an alphabetical string in lower case from that number and tell whether the string is palindrome… Read More »

## How to access elements of a Square Matrix

A square matrix is a matrix in which contains elements in the form of Rows and Columns. Below is an example of a 5×5 matrix.… Read More »