Java 实例 - 数组差集

Java 教程 · 2019-02-10 12:41:42

以下实例演示了如何使用 removeAll () 方法来计算两个数组的差集：

Main.java 文件

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 的元素" +objArray); System.out.println("array2 的元素" +objArray2); objArray.removeAll(objArray2); System.out.println("array1 与 array2 数组差集为："+objArray); } }

以上代码运行输出结果为：

array1 的元素[common1, common2, notcommon2]
array2 的元素[common1, common2, notcommon, notcommon1]
array1 与 array2 数组差集为：[notcommon2]

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Java 实例 - 数组差集

Main.java 文件

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