Backward String

Quiz>

You should return a given string in reverse order.

 

Input:

A string.

 

Output:

A string.

 

Example:

backward_string('val') == 'lav'
backward_string('') == ''
backward_string('ohho') == 'ohho'
backward_string('123456789') == '987654321'

 

def backward_string(val: str) -> str:
    # your code here
    return None


if __name__ == '__main__':
    print("Example:")
    print(backward_string('val'))

    # These "asserts" are used for self-checking and not for an auto-testing
    assert backward_string('val') == 'lav'
    assert backward_string('') == ''
    assert backward_string('ohho') == 'ohho'
    assert backward_string('123456789') == '987654321'
    print("Coding complete? Click 'Check' to earn cool rewards!")

 

Solve>

1. 문자열을 거꾸로 뒤집은 후 join으로 연결해서 반환해준다.

def backward_string(val: str):
    return ''.join(reversed(val))

 

Code>

def backward_string(val: str):
    return ''.join(reversed(val))

 

Example>

if __name__ == '__main__':
    print("Example:")
    print(backward_string('val'))

    # These "asserts" are used for self-checking and not for an auto-testing
    assert backward_string('val') == 'lav'
    assert backward_string('') == ''
    assert backward_string('ohho') == 'ohho'
    assert backward_string('123456789') == '987654321'
    print("Coding complete? Click 'Check' to earn cool rewards!")

 

Result>

Example:

lav

Coding complete? Click 'Check' to earn cool rewards!