SerhiiLihus
/ bonfire-caesars-cipher.js
Created
January 5, 2016 09:08
One of the simplest and most widely known ciphers is a Caesar cipher, also known as a shift cipher. In a shift cipher the meanings of the letters are shifted by some set amount.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // Bonfire: Caesars Cipher | |
| // Author: @serhiilihus | |
| // Challenge: http://www.freecodecamp.com/challenges/bonfire-caesars-cipher#?solution=function%20rot13(encodedStr)%20%7B%0A%20%20var%20codeArr%20%3D%20encodedStr.split(%22%22)%3B%20%20%2F%2F%20String%20to%20Array%0A%20%20var%20decodedArr%20%3D%20%5B%5D%2C%20newletterCode%3B%20%2F%2F%20Your%20Result%20goes%20here%0A%20%20%2F%2F%20Only%20change%20code%20below%20this%20line%0A%20%20codeArr.forEach(function(letter)%7B%0A%20%20%20%20%20%20%20newletterCode%20%3D%20(letter.charCodeAt()%20%3C%2065%20%7C%7C%20letter.charCodeAt()%20%3E%2090)%3F%20letter.charCodeAt()%20%3A%20(letter.charCodeAt()%20%2B%2013%20%3E%2090%20)%3F%20letter.charCodeAt()%20-%2013%20%3A%20letter.charCodeAt()%20%2B%2013%3B%0A%20%20%20%20%20%20%20decodedArr.push(String.fromCharCode(newletterCode))%3B%0A%20%20%7D)%3B%0A%20%20%2F%2F%20Only%20change%20code%20above%20this%20line%0A%20%20return%20decodedArr.join(%22%22)%3B%20%2F%2F%20Array%20to%20String%0A%7D%0A%0A%2F%2F%20Change%20the%20inputs%20below% |