Python练习1

#!/usr/bin/python33
#coding=utf-8
#由1-4组成，能组成多少个互不相同且无重复数字的三位数？都是多少？
for i in range(1,5):
	for j in range(1,4):
		for k in range(1,4):
			if i != j and j !=k and i != k:
				num = i * 100 + j*10 +k
				print(num)