# Tag Archives: Constructive Algorithms

Given an integer N. You can select any two digits from this number (the digits can be same but their positions should be different) and… Read More
Given an array arr[] and an integer K, the task is to find whether the array can be divided into two sub-arrays such that the… Read More
Given two integer arrays arr[] and cost[] where cost[i] is the cost of choosing arr[i]. The task is to choose a subset with at least… Read More
Given a String of three Colours(G, B, Y) as input, the task is to print the resultant combined color formed according to the rule given… Read More
Given a Natural number N and a whole number L, the task is to find the count of numbers, smaller than or equal to N,… Read More
Given a string consisting of only three possible characters ‘a’, ‘b’ or ‘c’. The task is to replace characters of the given string with ‘a’,… Read More
Given a number X, the task is to find the minimum number N such that the total set bits of all numbers from 1 to… Read More
Given two integers N and K where K < N, the task is to generate a permutation of integers from 1 to N such that… Read More
Given an array of N integers and 3 integers D, A and B. The task is to find the number of array elements that we… Read More
Given a linked list. The task is to change the value of the previous and next node of a node to 0 if the current… Read More
Given an array arr[] having 4 integer digits only. The task is to return the maximum 24 hour time that can be formed using the… Read More
Given three integers A, B and X. The task is to construct a binary string str which has exactly A number of 0’s and B… Read More
Given a Binary String of length . It is allowed to do at most one swap between any 0 and 1. The task is to find… Read More
Given an array containing N elements and an integer K. It is allowed to perform the following operation any number of times on the given… Read More
Given a binary string consisting only of 1’s and 0’s. Find the bit (output is either 1 or 0)whose minimum number of contiguous sequence flips… Read More