In this article, we will learn to generate all possible words from a string of phone digits using Java. Each digit on a mobile keypad corresponds to a set of letters, and our task is to find every possible combination of letters that can be formed by pressing those digits. ... Read More

You are given three strings S, A and B. You have to replace every sub−string of S equal to A with B and every sub−string of S equal to B with A. There is a possibility that two or more sub−strings matching A or B overlap. To avoid this confusion ... Read More

You are given a string 'str' that contains both uppercase and lowercase letters. Any lowercase character can be changed to an uppercase character and vice versa in a single action. The goal is to print the least possible instances of this process that are necessary to produce a string containing ... Read More

You are given two strings A and B, the task is to convert from string A to string B, if possible. You are allowed to perform only one operation that is to put any character from A and insert it at front. Check if it’s possible to convert the string. ... Read More

The task is to generate a string that consists of characters ‘a’ and ‘b’ which satisfies the condition mentioned below: str must have a length of A+B. The character 'a' must appear A times and the character 'b' must appear B times within the string. The sub−strings "aaa" and ... Read More

FCFS CPU Scheduling (First Come, First Serve) is a fundamental CPU scheduling mechanism that executes programs in the order they are added to the ready queue. In other words, the first process to come will be carried out first, and so on. Since it uses a non−preemptive scheduling technique, a ... Read More

Operating system has a concept known as the optimal page size that is affected by a number of variables, such as the system architecture, the amount of physical memory at hand, and the workload of the running applications. Steps/ Approach The following steps can be used to find the ideal ... Read More

The goal is to determine the minimum time required to complete the tasks in queue A based on the order of execution in queue B, given two queues A and B, each of size N, where: Pop this task and run it if the task identified at the ... Read More

Given are N processes and two N−sized arrays, arr1[] and arr2[]. A process's time in the critical section is recorded in arr1[], and it’s time to finish processing after leaving the critical part is recorded in arr2. The goal is to determine how long it will take for each process ... Read More

In this article, you will learn about how to find the order of execution for the given N processes in the Round Robin Scheduling algorithm. But before starting with the code, let’s understand a bit about how this algorithm works. Round Robin Scheduling is a popular CPU scheduling algorithm used ... Read More