Java 實(shí)例 - 數(shù)組差集
以下實(shí)例演示了如何使用 removeAll () 方法來計(jì)算兩個(gè)數(shù)組的差集:
/* author by w3cschool.cn 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 的元素" +objArray); System.out.println("array2 的元素" +objArray2); objArray.removeAll(objArray2); System.out.println("array1 與 array2 數(shù)組差集為:"+objArray); } }
以上代碼運(yùn)行輸出結(jié)果為:
array1 的元素[common1, common2, notcommon2] array2 的元素[common1, common2, notcommon, notcommon1] array1 與 array2 數(shù)組差集為:[notcommon2]
更多建議: