Question

Write a function named "string_sort" that receives 1 parameter - "numbers" (a string). It should firstly check whether numbers contains digits (0-9) only, and if not it should return False. If "numbers" contains only digits, then the function should return a string where all of the digits have been sorted from smallest to largest.
e.g. string_sort('hello') should return False, but string_sort('457346085') should return '034455678'.

Answer 1

SOURCE CODE:

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def string_sort(numbers: str):

    # check for only numbers or NOT
    if not numbers.isdigit():
        return False

    # Now, only digits are there.
    # sort the numbers
    lst = sorted(numbers)

    # join all the numbers to a string
    result = ''.join(lst)

    return result


# TEST
if __name__ == '__main__':
    print("string_sort('hello')  ==> ", string_sort('hello'))
    print(" string_sort('457346085') ==> ", string_sort('457346085'))
    print(" string_sort('45734a60b8e5') ==> ", string_sort('45734a60b8e5'))

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