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PHP Program to Check if it is possible to sort the array after rotating it

Last Updated: 23 July 2024

Given an array of size N, the task is to determine whether its possible to sort the array or not by just one shuffle. In one shuffle, we can shift some contiguous elements...read more

Greedy

Sorting

Competitive Programming

PHP Program for Check if an array is sorted and rotated

Last Updated: 22 July 2024

Given an array of N distinct integers. The task is to write a program to check if this array is sorted and rotated counter-clockwise. A sorted array is not considered as s...read more

PHP Program for Reversal algorithm for right rotation of an array

Last Updated: 22 July 2024

Given an array, right rotate it by k elements. After K=3 rotation Examples: Input: arr[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10} k = 3Output: 8 9 10 1 2...read more

PHP Program to Find element at given index after a number of rotations

Last Updated: 23 July 2024

An array consisting of N integers is given. There are several Right Circular Rotations of range[L..R] that we perform. After performing these rotations, we need to find an...read more

PHP Program for Minimum rotations required to get the same string

Last Updated: 22 July 2024

Given a string, we need to find the minimum number of rotations required to get the same string. Examples:Input : s = "geeks"Output : 5Input : s = "aaaa"Output : 1Algorith...read more

PHP Program to Inplace rotate square matrix by 90 degrees | Set 1

Last Updated: 23 July 2024

Given a square matrix, turn it by 90 degrees in an anti-clockwise direction without using any extra space.Examples :Input:Matrix: 1 2 3 4 5 6 7 8 9Output: 3 6 9 2...read more

PHP Program to Find the Size of Subarray With Maximum Sum

Last Updated: 22 July 2024

Given an Array, the task is to find the size of the subarray that yields the maximum sum. This article provides a comprehensive guide on how to implement a PHP program to ...read more

PHP Program to Find a triplet such that sum of two equals to third element

Last Updated: 23 July 2024

Given an array of integers, you have to find three numbers such that the sum of two elements equals the third element.Examples:Input: {5, 32, 1, 7, 10, 50, 19, 21, 2}Outpu...read more

two-pointer-algorithm

PHP Program for Pairs such that one is a power multiple of other

Last Updated: 23 July 2024

You are given an array A[] of n-elements and a positive integer k (k 1). Now you have find the number of pairs Ai, Aj such that Ai = Aj*(kx) where x is an integer.Note: (...read more

PHP Program to Find closest number in array

Last Updated: 22 July 2024

Given an array of sorted integers. We need to find the closest value to the given number. Array may contain duplicate values and negative numbers.Examples:Input : arr[] = ...read more

PHP Program for Number of pairs with maximum sum

Last Updated: 23 July 2024

Write a PHP program for a given array arr[], count the number of pairs arr[i], arr[j] such that arr[i] + arr[j] is maximum and i j.Example:Input : arr[] = {1, 1, 1, 2, 2,...read more

PHP Program to Find maximum element of each row in a matrix

Last Updated: 22 July 2024

Given a matrix, the task is to find the maximum element of each row.Examples:Input : [1, 2, 3] [1, 4, 9] [76, 34, 21]Output :3976Input : [1, 2, 3,...read more

PHP Program to Interchange elements of first and last rows in matrix

Last Updated: 22 July 2024

Given a 4 x 4 matrix, we have to interchange the elements of first and last row and show the resulting matrix.Examples :Input : 3 4 5 0 2 6 1 2 2 7 1 2 ...read more

PHP Program for Diagonally Dominant Matrix

Last Updated: 22 July 2024

In mathematics, a square matrix is said to be diagonally dominant if for every row of the matrix, the magnitude of the diagonal entry in a row is larger than or equal to t...read more

PHP Program to Efficiently compute sums of diagonals of a matrix

Last Updated: 22 July 2024

Given a 2D square matrix, find the sum of elements in Principal and Secondary diagonals. For example, consider the following 4 X 4 input matrix.A00 A01 A02 A03A10 A11 A12 ...read more

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