@CheckiO@The Most Numbers

def checkio(*args):
    nums = list(args)
    answer = 0
    box = 0
    length = len(nums)
    if length < 1:
        return 0
    for i in range(length):
        for j in range(i, length):
            if nums[j] > nums[i]:
                box = nums[i]
                nums[i] = nums[j]
                nums[j] = box
    answer = nums[0] - nums[-1]
    return answer


#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
    def almost_equal(checked, correct, significant_digits):
        precision = 0.1 ** significant_digits
        return correct - precision < checked < correct + precision
        
    print('Example:')
    print(checkio(1, 2, 3))
    
    assert almost_equal(checkio(1, 2, 3), 2, 3), "3-1=2"
    assert almost_equal(checkio(5, -5), 10, 3), "5-(-5)=10"
    assert almost_equal(checkio(10.2, -2.2, 0, 1.1, 0.5), 12.4, 3), "10.2-(-2.2)=12.4"
    assert almost_equal(checkio(), 0, 3), "Empty"
    print("Coding complete? Click 'Check' to review your tests and earn cool rewards!")