将特定项目移动到列表末尾 [英] Move specific items to the end of a list

问题描述

我在 Java 中有一个 ArrayList:

{"deleteItem", "createitem", "exportitem", "deleteItems", "createItems"}

我想将包含 delete 的所有字符串移动到列表的末尾，所以我会得到下一个:

I want to move all string which contains delete to the end of the list, so I would get the next:

{"createitem", "exportitem", "createItems", "deleteItem", "deleteItems"}`

我可以创建两个子列表 - 一个用于包含删除"词的词，一个用于其他词，然后合并它们，但我寻找一种更有效的方法.

I can create two sublists - one for the words which contain the 'delete' word, and one for the others, and then merge them, but I search for a more efficient way.

推荐答案

使用自定义比较器:

List<String> strings = Arrays.asList(
        "deleteItem", "createitem", "exportitem", "deleteItems", "createItems"
        );
Comparator<String> comparator = new Comparator<String>() {
    @Override
    public int compare(final String o1, final String o2) {
        if (o1.contains("delete") && !o2.contains("delete")) {
            return 1;
        }else if (!o1.contains("delete") && o2.contains("delete")) {
            return -1;
        }
        return 0;
    }
};
Collections.sort(strings, comparator);
System.out.println(strings);

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