Yes I know rand() creates 伪随机数.

来源: 于 2006-12-01 13:42:43 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

I was talking merely about the concept of 隨機數. If it is a 隨機數, we should not add the restriction of "不重複?".