Given a string, write a function to compress it by shortening every sequence of the same character to that character followed by the number of repetitions. If the compressed string is longer than the original, you should return the original string.

**Function Description**

Complete the function `compressString` in the editor.

`compressString` has the following parameter:

1.  `String input`: the string to compress

**Returns**

String: the compressed string or the original string if the compressed one is longer

String Compression Problem

Example