Java數組去除重複元素

import java.util.LinkedList;
import java.util.List;
/*
 * 數組去重複，例如: 原始數組是{4,2,4,6,1,2,4,7,8}，得到結果{4,2,6,1,7,8}
 */
public class RemoveTest {

    public static void main(String[] args) {
        String[] arr = {"4","2","4","6","1","2","4","7","8"};
        // 把數組存入set， set會自動去掉重複數字
/*        Set<String> set = new TreeSet<>();
        set.addAll(Arrays.asList(arr)); 
        System.out.println("去重複：");
        System.out.println("無序："+set); // 但 Set是無序的
*/
        // 存入list，順序排序
        List<String> list = new LinkedList<>();
        for (int i = 0; i < arr.length; i++) {
            if ( !list.contains(arr[i])) {
                list.add(arr[i]);
            }
        }// 用get方法取出list元素
        for (int i = 0; i < list.size(); i++) {
            System.out.print(list.get(i)+" ");
        }
    }
}      

轉載于:https://www.cnblogs.com/jackchiang/archive/2008/09/15/4602793.html