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1.Not very secureIn this example you have to validate if a user input string is alphanumeric.The string has the following conditions to be alphanumeric:At least one character ("" is not valid)Allo...

今天开始记录自己在codewars上遇到的问题和得到的收获。首先是自己已完成的四道题。1.CreditCardMaskUsually when you buy something, you’re asked whether your credit card number, phone number or answer to your most secret question is still...

1.Growth of a PopulationIn a small town the population is p0 = 1000 at the beginning of a year. The populationregularly increases by 2 percent per year and moreover 50 new inhabitants per yearcome ...

1.Count the smiley faces!Given an array (arr) as an argument complete the function countSmileys that should return the total number of smiling faces.Rules for a smiling face:-Each smiley face must ...

1.Mexican WaveIn this simple Kata your task is to create a function that turns a string into a Mexican Wave. You will be passed a string and you must return that string in an array where an uppercase...