s-day02-Collections里面的sort方法以及Comparable接口

2026-08-02 14:34:10 +08:00
parent 3cb9b35ade
commit fc1ab55c40
2 changed files with 78 additions and 0 deletions
@@ -0,0 +1,39 @@
+package com.inmind.collections04;
+
+public class Student implements Comparable<Student>{
+    String name;
+    int age;
+    int score;
+
+    public Student(String name, int age, int score) {
+        this.name = name;
+        this.age = age;
+        this.score = score;
+    }
+
+    @Override
+    public String toString() {
+        return "Student{" +
+                "name='" + name + '\'' +
+                ", score=" + score +
+                '}';
+    }
+
+    /*
+    排序口诀:
+            我(this)-它(参数o):升序
+            它-我:降序
+     */
+    @Override
+    public int compareTo(Student o) {
+//        return this.score - o.score; //升序
+       /* if (this.score > o.score) {
+            return -1;
+        } else if (this.score < o.score) {
+            return 1;
+        } else {
+            return 0;
+        }*/
+        return o.score - this.score;
+    }
+}