编程开发 > JAVA > 文章内容

Java数组实例:数组交集

2016-3-21编辑:ljnbset

以下实例演示了如何使用 removeAll () 方法来删除包含在另外一个数组中的数组元素:

/*
 author by w3cschool.cc
 文件名:Main.java
 */

import java.util.ArrayList;

public class Main {
   public static void main(String[] args)  {
      ArrayList objArray = new ArrayList();
      ArrayList objArray2 = new ArrayList();
      objArray2.add(0,"common1");
      objArray2.add(1,"common2");
      objArray2.add(2,"notcommon");
      objArray2.add(3,"notcommon1");
      objArray.add(0,"common1");
      objArray.add(1,"common2");
      objArray.add(2,"notcommon2");
      System.out.println("array1 数组元素:"+objArray);
      System.out.println("array2 数组元素:"+objArray2);
      objArray.retainAll(objArray2);
      System.out.println("array2 & array1 数组交集为:"+objArray);
   }
}

以上代码运行输出结果为:

array1 数组元素:[common1, common2, notcommon2]
array2 数组元素:[common1, common2, notcommon, notcommon1]
array2 & array1 数组交集为:[common1, common2]
Java数组实例:删除数组元素

热点推荐

登录注册
触屏版电脑版网站地图