python3鸡兔同笼问题 

# 假设兔子有x只
for x in range(1,31): 
    y = 30 - x  
    if 4*x + 2*y == 90:
        print('兔子有%d只，鸡有%d只'%(x, y))

 

posted @ 2018-05-12 11:03  heheheda  阅读(875)  评论(0)    收藏  举报