题解 | #24点游戏算法#
24点游戏算法
http://www.nowcoder.com/practice/fbc417f314f745b1978fc751a54ac8cb
时间有点长，但是效果还是不错的
import itertools
while True:
try:
nums_list = list(map(int,input().split(' ')))
n = len(nums_list)
order = ['+','-','*','/']
for nums in itertools.permutations(nums_list):
for i in order:
for j in order:
for k in order:
result = eval('{0}{1}{2}'.format(nums[0],i,nums[1]))
result = eval('{0}{1}{2}'.format(result,j,nums[2]))
result = eval('{0}{1}{2}'.format(result,k,nums[3]))
if result == 24:
print("true")
raise ValueError
else:
print('false')
except:
break
