programming-puzzle Archives

Find the minimum number of preprocess moves required to make two strings equal

Last Updated: 24 March 2023

Given two strings A and B of equal lengths consisting of lower case English letters. The task is to count the minimum number of pre-processing moves on string A required t...read more

DSA

programming-puzzle

Number of wins for each player in a series of Rock-Paper-Scissor game

Last Updated: 02 August 2021

Two players are playing a series of games of Rock–paper–scissors. There are a total of K games played. Player 1 has a sequence of moves denoted by string A and similarly p...read more

DSA

programming-puzzle

Count number of trailing zeros in (1^1)*(2^2)*(3^3)*(4^4)*..

Last Updated: 23 June 2022

Given an integer n, the task is to find the number of trailing zeros in the functionf(n)=\prod\limits_{i = 1}^{n} i^{i}i.e. f(n) = 11 * 22 * 33 * ... * nn.Examples:Input: ...read more

Filling diagonal to make the sum of every row, column and diagonal equal of 3x3 matrix

Last Updated: 08 December 2022

Given 9 elements in a 3 x 3 matrix where the value of diagonals is 0. We need to find the values in the diagonal to make the sum of every row, column, and diagonal equal.E...read more

Last Updated: 13 March 2023

Given an integer N and a pizza which can be cut into pieces, each cut should be a straight line going from the center of the pizza to its border. Also, the angle between a...read more

DSA

programming-puzzle

Find the non decreasing order array from given array

Last Updated: 23 June 2022

Given an array A[] of size N / 2, the task is to construct the array B[] of size N such that:B[] is sorted in non-decreasing order.A[i] = B[i] + B[n - i + 1].Note: Array A...read more

DSA

programming-puzzle

A Sum Array Puzzle

Last Updated: 11 July 2025

Given an array arr[] of n integers, construct a Sum Array sum[] (of same size) such that sum[i] is equal to the sum of all the elements of arr[] except arr[i]. Solve it wi...read more

Jump in rank of a student after updating marks

Last Updated: 13 September 2022

Given three arrays names[], marks[] and updates[] where:names[] contains the names of students.marks[] contains the marks of the same students.updates[] contains the integ...read more

DSA

Sorting Quiz

programming-puzzle

Check if number can be displayed using seven segment led

Last Updated: 05 March 2023

Given a string str representing an integer and an integer led which is the count of LEDs available. The task is to check if it is possible to display the number using the ...read more

Split a number into 3 parts such that none of the parts is divisible by 3

Last Updated: 31 August 2023

You are given the number N. Your task is to split this number into 3 positive integers x, y, and z, such that their sum is equal to 'N' and none of the 3 integers is a mul...read more

Final string after performing given operations

Last Updated: 08 December 2022

Given a string str containing only characters x and y, the task is to perform the following operations while possible:Find an index such that s[i] = 'x' and s[i+1] = 'y' a...read more

Time taken by two persons to meet on a circular track

Last Updated: 11 July 2025

Given integers L, S1 and S2 where L is the length of a circular track in meters, S1 and S2 are the speeds of two persons in kilometers/hour moving in the same direction on...read more

Mathematical

Technical Scripter 2018

DSA

GCD-LCM

programming-puzzle

Generate a sequence with the given operations

Last Updated: 07 December 2022

Given a stringSwhich contains onlyI(increase) andD(decrease). The task is to return any permutation of integers [0, 1, ..., N] where N ? Length of S such that for all i = ...read more

Strings

DSA

limited-range-elements

programming-puzzle

Distribution of candies according to ages of students

Last Updated: 08 May 2023

Given two integer arrays ages and packs where ages store the ages of different students and an element of pack stores the number of candies that packet has (complete array...read more

DSA

programming-puzzle

Minimum amount of lamps needed to be installed

Last Updated: 09 September 2022

Given string str containing only dots and asterisk. A dot represents free spaces and*represents lamps. A lamp at positionican spread its light at locations i-1, i, and i+1...read more

DSA

programming-puzzle