Reverse a string

Return the string with its characters back-to-front: reverse_string("abc") gives "cba".

Python slicing has a neat trick: s[::-1] walks the string with a step of -1, from the end to the start. You can also build the answer with a loop if you prefer.

Write reverse_string(s) that returns s with its characters in reverse order. A slice s[::-1] does it in one step.

def reverse_string(s):
    # return the characters of s in reverse order
    return s

Click Run to see the output here.

Next lesson →

Reverse a string

Reverse a string

Sign in

Log in or create account