Rumah >Java >javaTutorial >Java 实例 - 数组交集
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]
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