Aptitude Tests are used by many recruiters around the world. Their purpose is to test technical skills, attitudes, and soft skills related to the search… Read More

Java is the Queen of programming languages. It beholds the pride of the most preferred programming language by software developers. Java has recently celebrated its… Read More

Given an array arr[] of size N and an integer X, the task is to find the length of the longest subsequence such that the… Read More

Check if A and B can be reduced to 0 by decrementing with x and y with absolute difference at most K

Given three integers A, B, and K. The task is to check whether A and B can be reduced to zero by decrementing x and… Read More

Given two arrays arr1[] and arr2[] of size N and N – 1 respectively. Each value in arr2[] is obtained by adding a hidden value… Read More

Given an array arr containing N unique integers. The task is to calculate the minimum number of deques required to make the array sorted. Example: … Read More

Given string str that contains only digits, the task is to return an expression by inserting the ‘+’ or ‘*’ operator between every two digits… Read More

Almost each one of you would agree that a discount offer or sale on the desired product is something that fascinates us the most! And… Read More

Given a matrix mat[][] of dimensions N*M and an array target[] of M integers, the task is to check whether any row of the matrix… Read More

Given numeric string S of size N and a positive integer K, the task is to find the minimum number of adjacent swaps required in… Read More

Given a ternary string S of length N containing only ‘0’, ‘1’ and ‘2’ characters and Q queries containing a range of indices [L, R],… Read More

Hashing is a great practical tool, with an interesting and subtle theory too. In addition to its use as a dictionary data structure, hashing also… Read More

Given an array arr[] of N integers and a positive integer K, the task is to find the minimum number of operations required to reduce… Read More

Given a positive integer N, the task is to check if N can be written as the sum of two perfect biquadrates or not i.e., (N… Read More

Given three positive integers X, Y, and B, where X and Y are Base-B integers, the task is to find the value of X –… Read More