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Re:哪位大牛解释下这组数据

Posted by meizhishang at 2009-08-21 09:31:12 on Problem 1028
In Reply To:哪位大牛解释下这组数据 Posted by:0806580124 at 2009-07-12 20:27:00

> VISIT http://acm.ashland.edu/
> VISIT http://www.ibm.com/
> BACK
> BACK
> FORWARD
> FORWARD
> FORWARD
> BACK
> QUIT
> 
> 为什么最后BACK显示的是
> http://acm.ashland.edu/
> 而不是http://www.ibm.com/

输出为
http://acm.ashland.edu/
http://www.ibm.com/
http://acm.ashland.edu/
http://www.acm.org/
http://acm.ashland.edu/
http://www.ibm.com/
Ignored
http://acm.ashland.edu/
最后当然是http://acm.ashland.edu/

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