Java 实例 - 数组差集
Java 数组差集,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();
objArray.add(0,"common1");
objArray.add(1,"common2");
objArray.add(2,"notcommon2");
objArray2.add(0,"common1");
objArray2.add(1,"common2");
objArray2.add(2,"notcommon");
objArray2.add(3,"notcommon1");
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);
}
}
public class Main {
public static void main(String[] args) {
ArrayList objArray = new ArrayList();
ArrayList objArray2 = new ArrayList();
objArray.add(0,"common1");
objArray.add(1,"common2");
objArray.add(2,"notcommon2");
objArray2.add(0,"common1");
objArray2.add(1,"common2");
objArray2.add(2,"notcommon");
objArray2.add(3,"notcommon1");
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);
}
}
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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