Reversing A String While Preserving Special Characters

Create a function that accepts a string and returns the reverse of that string while preserving the position of all punctuation.

a,b$c -> c,b$a
hello world! -> dlrow olleh!

Examples

assert reverse_string("a,b$c") == "c,b$a"
assert reverse_string("hello world!") == "dlrow olleh!"

Notes

• The string may include letters, numbers, and special characters.

Constraints

• The string will not be empty.
• The string will contain at least one letter.