# Category Archives: Algorithms

Given two strings S1 and S2 of the same length containing characters ranging from ‘0’ to ‘9’, the task is to return the minimum number… Read More
Given a positive integer N. The task is to print the array in decreasing order in which the numbers are odd powers of 2  and… Read More
Given two Integers N and X in which N is the total number of elements of the series that starts with X (say A). The… Read More
Given a binary tree and an integer K, the task is to write a program to count the number of nodes such that the path… Read More
Given a binary string consisting of ‘0’ and ‘1’ only and an integer K, the task is to minimize the string as far as possible… Read More
Given a 4-digit number with at least two distinct digits, Your program should perform the following operations on the number:  Arrange the digits in descending… Read More
Given a binary tree and a node start that is initially infected. For every second, neighbours of an infected node get infected. The task is… Read More
Given a 2D array arr[][] of size N * M, the value in arr[][] represents the value of coins, the task is to maximize the… Read More
Given N nodes, where each of them is numbered from 0 to N – 1, and array edges, where there is a directed edge from… Read More
Given an array of strings arr[] of length N, the task is to sort the strings in Lexicographical order. Examples: Input: arr[] = {“batman”, “bat”,… Read More
Given an array A[] of size N, the task is to find the total number of positions in all the subarrays such that the value… Read More
Given an array arr[] of size N that contains -1 and all positive integers, the task is to modify the array and print the final… Read More
Given an array of positive integers arr[] of length N and a query array query[] of length M, the task is to find the maximum… Read More
Given an array A[] of N positive integers and 3 integers X, Y, and Z, the task is to check if there exist 4 indices… Read More
These are the special type of recursive functions, where the last statement executed inside the function is the call to the function itself. Advantages of… Read More