Java 实例 - 数组差集
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
importjava.util.ArrayList;
publicclassMain{publicstaticvoidmain(String[]args){ArrayListobjArray = newArrayList();
ArrayListobjArray2 = newArrayList();
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]