the year 1800 was a leap year in the Julian calendar. However, by that time, many countries had already switched to the Gregorian calendar, which did not consid
Read more →Watson likes to challenge Sherlock's math ability. He will provide a starting and ending value that describe a range of integers.
Read more →You have two strings of lowercase English letters. You can perform two types of operations on the first string
Read more →Given an array of bird sightings where every element represents a bird type id
Read more →A Discrete Mathematics professor has a class of students. Frustrated with their lack of discipline.
Read more →We say that a string contains the word hackerrank if a of its characters spell the word hackerrank. Remeber that a subsequence maintains the order of characters
Read more →HackerLand Enterprise is adopting a new viral advertising strategy
Read more →Its base and height are both equal to . It is drawn using # symbols and spaces. The last line is not preceded by any spaces.
Read more →There is a string of lowercase English letters that is repeated infinitely many times. Given an integer
Read more →David has several containers, each with a number of balls in it. He has just enough containers to sort each type of ball he has into its own container.
Read more →A video player plays a game in which the character competes in a hurdle race.
Read more →Alef the Frog is in an two-dimensional maze represented as a table.
Read more →John Watson knows of an operation called a right circular rotation on an array of integers.
Read more →There is a new mobile game that starts with consecutively numbered clouds.
Read more →A child is playing a cloud hopping game. In this game, there are sequentially numbered clouds that can be thunderheads or cumulus clouds.
Read more →The factorial of the integer , written , is defined as
Read more →We consider two strings to be anagrams of each other if the first string's letters can be rearranged to form the second string.
Read more →Taum is planning to celebrate the birthday of his friend, Diksha. There are two types of gifts that Diksha wants from Taum
Read more →Given an array of integers, determine the minimum number of elements to delete to leave only elements of equal value.
Read more →Given an array of integers and a positive integer , determine the number of pairs where and + is divisible by .
Read more →A jail has a number of prisoners and a number of treats to pass out to them
Read more →A pangram is a string that contains every letter of the alphabet. Given a sentence determine whether it is a pangram in the English alphabet
Read more →Given a set of distinct integers, print the size of a maximal subset of where the sum of any numbers in is not evenly divisible by k.
Read more →There are a number of people who will be attending ACM-ICPC World Finals.
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