list交并补差集合

工具类依赖

xml 复制代码

<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>3.8.1</version>
</dependency>

<dependency>
    <groupId>commons-collections</groupId>
	<artifactId>commons-collections</artifactId>
	<version>3.2</version>
</dependency>

参考代码

java 复制代码

		// 交并补差
        List<Integer> list1 = Lists.newArrayList(1,2,3);
        List<Integer> list2 = Lists.newArrayList(3,4,5);
        List<Integer> intersection = (List<Integer>) CollectionUtils.intersection(list1, list2);
        log.info("list1与list2交集：[{}]",intersection);

        List<Integer> unionResult = (List<Integer>) CollectionUtils.union(list1, list2);
        log.info("list1与list2并集：[{}]",unionResult);

        List<Integer> subtractList = (List<Integer>) CollectionUtils.subtract(list1, list2);
        log.info("list1与list2差集：[{}]",subtractList);

        List<Integer> subtractListSecond = (List<Integer>) CollectionUtils.subtract(list2, list1);
        log.info("list2与list1差集：[{}]",subtractListSecond);

        List<Integer> disjunctionList = (List<Integer>) CollectionUtils.disjunction(list1, list2);
        log.info("list1与list2补集：[{}]",disjunctionList);

00:05:52.126 [main] INFO com.geekmice.sbeasypoi.service.impl.ds - list1与list2交集：[[3]]

00:05:52.136 [main] INFO com.geekmice.sbeasypoi.service.impl.ds - list1与list2并集：[[1, 2, 3, 4, 5]]

00:05:52.147 [main] INFO com.geekmice.sbeasypoi.service.impl.ds - list1与list2差集：[[1, 2]]

00:05:52.147 [main] INFO com.geekmice.sbeasypoi.service.impl.ds - list2与list1差集：[[4, 5]]

00:05:52.149 [main] INFO com.geekmice.sbeasypoi.service.impl.ds - list1与list2补集：[[1, 2, 4, 5]]