使用2-9中不重复的数使得{}+{}={}{}-{}=1{}满足
(样子不太好看^^)
(1)利用for循环和if语句
代码:
#利用2-9不重复的数使得{}+{}={}{}-{}=1{}
i=0
for a1 in range(2,10):
for a2 in range(2,10):
if a1!=a2 and a1<a2:#a1<a2去重
for a3 in range(2,10):
if a2!=a3 and a1!=a3:
for a4 in range(2,10):
if a3!=a4 and a1!=a4 and a2!=a4:
for a5 in range(2,10):
if a4!=a5 and a1!=a5 and a2!=a5 and a3!=a5:
for a6 in range(2