Hackerrank
Your algorithms have become so good at predicting the market that you now know what the share price of Wooden Orange Toothpicks Inc. (WOT) will be for the next number of days. Each day, you can either buy one share of WOT, sell any number of shares of WOT that
Hackerrank
Mr. Anant Asankhya is the manager at the INFINITE hotel. The hotel has an infinite amount of rooms. One fine day, a finite number of tourists come to stay at the hotel. The tourists consist of: → A Captain. → An unknown group of families consisting of members per group where ≠ . The
Hackerrank
A Smith number is a composite number, the sum of whose digits is the sum of the digits of its prime factors obtained as a result of prime factorization (excluding ). The first few such numbers are 4, 22, 27, 58, 85, 94 and 121 Example: 378 = 2 x 3 x
Hackerrank
Alex is attending a Halloween party with his girlfriend, Silvia. At the party, Silvia spots the corner of an infinite chocolate bar (two dimensional, infinitely long in width and length). If the chocolate can be served only as 1 x 1 sized pieces and Alex can cut the chocolate bar
Hackerrank
In this challenge you need to print the string that accompanies each integer in a list sorted by the integers. If two strings are associated with the same integer, they must be printed in their original order so your sorting algorithm should be stable. There is one other twist. The
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Comparison Sorting Quicksort usually has a running time of , but is there an algorithm that can sort even faster? In general, this is not possible. Most sorting algorithms are comparison sorts, i.e. they sort a list just by comparing the elements to one another. A comparison sort algorithm cannot
Hackerrank
Each time Sunny and Johnny take a trip to the Ice Cream Parlor, they pool their money to buy ice cream. On any given day, the parlor offers a line of flavors. Each flavor has a cost associated with it. Given the value of and the of each flavor for
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Alice is taking a cryptography class and finding anagrams to be very useful. We consider two strings to be anagrams of each other if the first string's letters can be rearranged to form the second string. In other words, both strings must contain the same exact letters in
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A prime is a natural number greater than that has no positive divisors other than and itself. Given integers, determine the primality of each integer and print whether it is Prime or Not prime on a new line. Note: If possible, try to come up with an primality algorithm, or
Hackerrank
You are given queries. Each query is of the form two integers described below: - : Insert x in your data structure. - : Delete one occurence of y from your data structure, if present. - : Check if any integer is present whose frequency is exactly . If yes, print 1 else 0.
Hackerrank
Harold is a kidnapper who wrote a ransom note, but now he is worried it will be traced back to him through his handwriting. He found a magazine and wants to know if he can cut out whole words from it and use them to create an untraceable replica of
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Two strings are anagrams of each other if the letters of one string can be rearranged to form the other string. Given a string, find the number of pairs of substrings of the string that are anagrams of each other. For example , the list of all anagrammatic pairs is at