stevepetcu/coding-problem-cipher

Substitution Cipher Problem

A substitution cipher is a simple way to obfuscate a string, by replacing the letters, given a mapping. For example:

{
  "cipher": "zyxwvutsrqponmlkjihgfedcba",
  "alphabet": "abcdefghijklmnopqrstuvwxyz"
}

Each letter in the cipher replaces the corresponding letter in the alphabet. So a word like abs becomes zyf.

Example

Input:

{
  "text": "Hello, folks!",
  "cipher": "zyxwvutsrqponmlkjihgfedcba"
}

Output: Svool, uloph!