This a coding problem based on Caesar Cypher(or Cipher). Caesar Cipher Technique is a simple and easy method of encryption. It is a simple type of substitution cipher in which each letter of plain text is replaced by a letter with some fixed number of positions down with alphabet. This is used in a way:
Given:
a=z
b=y
............ z=a
For example:
Input: abc
Output should Be: zyx