We will be given a string of length n, an integer k, and an integer array of length 26. The integer array defines the cost of each lowercase character and the string will contain only lowercase letters. We have to create a subsequence of length k from the given string ... Read More

We will be given an array that will contain the pairs which represent the range and their value will range from 0(inclusive) to N(exclusive). Here, N is the size of the binary string which we have to return as the answer. For all the given ranges we have to maximize ... Read More

Sorting an array means ordering all the elements of the array in increasing order. Sorting an array by swapping adjacent elements means we can only swap elements that are adjacent to each other but we can swap adjacent elements any number of times. We will be given a binary string ... Read More

A binary string is a string that contains only two different types of characters 0 and 1. We will be given two binary strings of the same length and our task is to make both of them equal by toggling two adjacent characters of the first string. Also, we have ... Read More

Max count is a count which is the maximum possible. Here we have given an integer N and a string of integer M. Our task is to return the maximum count of making the number N using the digits of the string of integer M. Also given that, we can ... Read More

Inserting a number in the given number means adding a new given digit in the given number either at the front, end, or in between the numbers. We have given a number and a digit and have to add the digit in the number in a way such that the ... Read More

A string will be given to us of length five which represents the time in the HH:MM format. There may be some ‘?’ present in the string and we have to replace them with any number such that the result is the valid time which could be the maximum possible. ... Read More

Generating all possible strings is to replace a character of a string with a respective symbol and produce all possible strings. We will be given a string ‘s’ of size ‘N’ and an unordered map ‘mp’ of a pair of characters of size ‘M’. Here we can replace the mp[i][0] ... Read More

A binary string is a string that consists of only two different types of characters and that is ‘0’ and ‘1’. We will be given a binary string and the number m. We have to apply the operation to convert all the consecutive occurrences of the 0 and 1 that ... Read More

Fibbinary Numbers are numbers that have no consecutive 1s in their binary representation. However, they can have consecutive zeros in their binary representation. Binary representation is the representation in which the numbers are shown with base 2 and only two digits that are 1 and 0 only. Here, we will ... Read More