Given an array A of integers, find the maximum of j - i subjected to the constraint of A[i] <= A[j].

You are given an array (zero indexed) of N non-negative integers, A0, A1 ,…, AN-1. Find the minimum sub array Al, Al+1 ,…, Ar so if we sort(

Given an array of integers, sort the array into a wave like array and return it, In other words, arrange the elements into a sequence such t

Given an unsorted integer array, find the first missing positive integer. Example: Given [1,2,0] return 3, [3,4,-1,1] return 2, [-8, -7, -6

Given a matrix, A of size M x N of 0s and 1s. If an element is 0, set its entire row and column to 0. Note: This will be evaluated on the e

Given a read only array of n + 1 integers between 1 and n, find one number that repeats in linear time using less than O(n) space and traver

Given a collection of intervals, merge all overlapping intervals. For example: Given [1,3],[2,6],[8,10],[15,18], return [1,6],[8,10],[15,18

Given a positive integer n and a string s consisting only of letters D or I, you have to find any permutation of first n positive integer th

Implement the next permutation, which rearranges numbers into the numerically next greater permutation of numbers for a given array A

You are given an n x n 2D matrix representing an image. Rotate the image by 90 degrees (clockwise). You need to do this in place.