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他写错了而且条件应该是n=j-i, 实际上这题比第一要简单因为不管p+n大于i to j还是小于我们只需从p开始查找,直到找到符合p+j-i的position就行了,这是个人意见.

guest (fang)
(#42439@0)
2001-4-9 -04:00
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