
5.(程序题)有四个数字:1、2、3、4,编程输出所有互不相同且无重复数字的三位数。
num = (1, 2, 3, 4)
count = 0
for i in num:
for j in num:
for k in num:
if i != j and i != k and j != k:
count = count + 1
print('result is : %d' % (i * 100 + j * 10 + k))
print('count is %d' % (count))
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