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Re:数据有错？

Posted by wiltord at 2006-12-04 20:02:31 on Problem 3121
In Reply To:Re:数据有错？ Posted by:zhucheng at 2006-12-04 19:57:07

> 应该是这样：
> PUSH: {}    
> DUP: {}    {}    
> PUSH: {}    {}    {}    
> ADD: {}    {{}}    
> ADD: {{{}}}  

ADD will pop the stack twice, add the first set to the second one, and then push the resulting set on the stack.

这句话怎么理解？根据题目上A ADD B的例子我理解就把A作为一个元素加入到B集合中。

Followed by:

Re:数据有错？ (195) wiltord 2006-12-04 20:05:47
Re:数据有错？ (227) zhucheng 2006-12-04 20:08:58

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