String Incrementer


Your job is to write a function called increment_string which increments a string, to create a new string. If the string already ends with a number, the number should be incremented by 1. If the string does not end with a number the number 1 should be appended to the new string.


"foo" -> "foo"

"foobar23" -> "foobar24"

"foo0042" -> "foo0043"

"foo9" -> "foo10"

"foo099" -> "foo100"

Attention: If the number has leading zeros the amount of digits should be considered.

def increment_string(input) end
< >