A simple string encryption problem/kata from codewars.com that I've solved in javascript. Please try yourself before looking into the solution.

Problem link


Encrypt this!

You want to create secret messages which can be deciphered by the Decipher this! kata. Here are the conditions:

  1. Your message is a string containing space separated words.
  2. You need to encrypt each word in the message using the following rules:
  • The first letter needs to be converted to its ASCII code.
  • The second letter needs to be switched with the last letter
  1. Keepin' it simple: There are no special characters in input.


encryptThis("Hello") === "72olle"
encryptThis("good") === "103doo"
encryptThis("hello world") === "104olle 119drlo"