列表实现既是一个设置列表（序列）？ [英] List implementation that is both a Set a List (sequence)?

问题描述

我可以扩展LinkedList并实现Set，所以我有一个没有重复的列表。我想知道这样的实现是否已经不存在？

I'm in the position of extending LinkedList and implement Set, so that I have a list with no duplicates. I'm wondering if such an implementation doesn't exist already?

我计划做的是覆盖 add（e） 方法首先查找元素，如果存在，不要添加它。类似：

All I'm planning to do is to override the add(e) method to first look-up the element, and if present don't add it. Something like:

add(E){
   if(get(E) == null) super.add(E);
}

推荐答案

但是，您可以查看 SetUniqueList 从常见收藏，可能符合您要查找的内容。

However, you can take a look at SetUniqueList from the Common Collections which may be along the lines of what you are looking for.

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