Code Challenge - ranjanui/preparation GitHub Wiki

Ref: https://www.codewars.com/kata/you-only-need-one-beginner?utm_source=newsletter

Challenge 1

Your goal in this kata is to implement a difference function, which subtracts one list from another and returns the result.

It should remove all values from list a, which are present in list b.

array_diff([1,2],[1]) == [2] If a value is present in b, all of its occurrences must be removed from the other:

array_diff([1,2,2,2,3],[2]) == [1,3]

Challenge 2

You will be given an array (a) and a value (x). All you need to do is check whether the provided array contains the value.

Array can contain numbers or strings. X can be either. Return true if the array contains the value, false if not.