将数组反转

最新推荐文章于 2025-07-06 19:52:48 发布

xiaozhang___

最新推荐文章于 2025-07-06 19:52:48 发布

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分类专栏： java

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将数组反转

package com;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class CollectionText {
     public static void main(String[] args) {
          List<Student>list=new ArrayList<Student>();
          list.add(new Student(5, "胡汉一", 55));
          list.add(new Student(9, "胡汉三", 75));
          list.add(new Student(1, "胡汉八", 65));
          list.add(new Student(8, "胡汉四", 85));
          
          //反转
          Collections.reverse(list);
          for (Student s : list) {
              System.out.println(s);
          }
          
     }
}

随机排序

package com;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class CollectionText {
     public static void main(String[] args) {
          List<Student>list=new ArrayList<Student>();
          list.add(new Student(5, "胡汉一", 55));
          list.add(new Student(9, "胡汉三", 75));
          list.add(new Student(1, "胡汉八", 65));
          list.add(new Student(8, "胡汉四", 85));
          
          //反转
//        Collections.reverse(list);
          Collections.shuffle(list);
          for (Student s : list) {
              System.out.println(s);
          }
          
     }
}