30 不重复的三位数

0-9可以组成多少不重复三位数

拆分 n = a*100 + 10*b + c   abc

代码如下：

#!/usr/bin/env python
# encoding: utf-8
"""
@author: 侠之大者kamil
@file: 30 不重复的三位数.py
@time: 2016/5/23 15:53
"""
l = range(4)
cont = 0
for a in l[1:]:
    for b in l:
        if a == b:continue #过滤a=b
        for c in l:
            if c !=a and c !=b:
                print(a,b,c)
                cont += 1
print('一共出现：',cont)

def func():
    pass


if __name__ == '__main__':
    pass