Python 練習實例85

Python 100例

題目：判斷一個素數能被幾個9整除。

程序分析：無。

程序源代碼：

#!/usr/bin/python
# -*- coding: UTF-8 -*-

if __name__ == '__main__':
    zi = int(raw_input('input a number:\n'))
    n1 = 1
    c9 = 1
    m9 = 9
    sum = 9
    while n1 != 0:
        if sum % zi == 0:
            n1 = 0
        else:
            m9 *= 10
            sum += m9
            c9 += 1
    print '%d can be divided by %d 9' % (sum,c9)

以上實例輸出結果為：

input a number:
9
9 can be divided by 1 9

Python 100例