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本帖最后由 白无痕 于 2018-9-2 21:34 编辑
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 .请用已学过的知识编写程序,找出小甲鱼藏在下边这个长字符串中的密码,密码的埋藏点符合以下规律:
 a) 每位密码为单个小写字母
 b) 每位密码的左右两边均有且只有三个大写字母
 
 以下是我打得代码,就是不知道问题出在哪了,运行结果总是多出两个字母,求大神为小弟解惑
  
 
 复制代码str1 = '题目的字符串'
x = 0
y = 9
for i in range(len(str1)-10):
            
    if str1[x+4].islower() and str1[x+1:x+4].isupper() and str1[y-4:y-1].isupper()and not str1[x].isupper() and not str1[y-1].isupper():
        print(str1[x+4],end = '')
        x += 1
        y += 1
    else:
        x += 1
        y += 1
 
 字符串:
 ACFlCTLIQlAIVMTqHFkswqbDDHtpgcWaXSSglUYKE
 lqNsYCyaQXBzrFUbkAUAWAKrDgDtAlGMBqWQhpEwquZqWZJpslUfMllCwWptqINjrOBTLuPzwvXNbLCx
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