You have a total of n coins and you want to arrange the coins in staircase shape, where every i-th row must have exactly i coins. You want to find the total Read more →
Algorithms
6 postsGiven an array in increasing order and a target, return indices of two numbers such that they add up to the target. You have to return an array of indices where the Read more →
Given an array arr[] and the two elements x and y, the task is to find which element(x or y) has highest occurrence in the array. If the occurrences are the same, Read more →
Given an integer array arr[] and K, the task is to count the number of elements ‘A[i]’, such that A[i] * K is also present in the array. Note: If there are Read more →
Given an array arr[] of n elements, write a function to search a given element x in arr[]. Examples: Input : arr[] = {10, 20, 80, 30, 60, 50, 110, 100, 130, Read more →
Given a stock n-day price, you can only trade at most once a day, you can choose to buy a stock or sell a stock or give up the trade today, the Read more →
Given a string str. The task is to check whether this string can be splitted into two strings X and Y such that Y is a substring of X X + Y Read more →
Given an integer array arr[] and an integer K (greater than 0), the task is to count the subarray whose elements sum up to a multiple of K, else print -1. A Read more →
Given a Binary String S of length N which consists of only 0 and 1, the task is to remove minimum number of 0’s from the string such that all 1’s form Read more →
Given an array of size N, print the index of the distinct element from the array, provided the array has only one distinct element and rest other elements are same. Examples: Input: Read more →