day10

Author: TigerNiu

practice/test/.vscode/launch.json

@@ -4,6 +4,27 @@
     // 欲了解更多信息，请访问: https://go.microsoft.com/fwlink/?linkid=830387
     "version": "0.2.0",
     "configurations": [
+        {
+            "type": "java",
+            "name": "Launch maopao",
+            "request": "launch",
+            "mainClass": "day10.maopao",
+            "projectName": "test_a0501e95"
+        },
+        {
+            "type": "java",
+            "name": "Launch ComputerTest",
+            "request": "launch",
+            "mainClass": "day10.ComputerTest",
+            "projectName": "test_a0501e95"
+        },
+        {
+            "type": "java",
+            "name": "Launch testdemo",
+            "request": "launch",
+            "mainClass": "day10.OuterInner.testdemo",
+            "projectName": "test_a0501e95"
+        },
         {
             "type": "java",
             "name": "Launch PersonDemo",

practice/test/bin/day10/ComputerTest.class

@@ -0,0 +1,16 @@
+package day10;
+
+public class ComputerTest {
+    public static void main(String[] args) {
+        long total = 0;
+        for (int j = 0; j < 101; j++) {
+            long start = System.currentTimeMillis();
+            for (int i = 0; i < 1000; i++) {
+                System.out.println(i);
+            }
+            long end = System.currentTimeMillis();
+            total += (end - start);
+        }
+        System.out.println(total/100);
+    }
+}

practice/test/bin/day10/OuterInner/Outer$Inner.class

@@ -0,0 +1,12 @@
+package day10.OuterInner;
+
+public class Outer {
+
+    private int age = 10;
+
+    public class Inner {
+        public void show() {
+            System.out.println(age);
+        }
+    }
+}

practice/test/bin/day10/OuterInner/Outer.class

@@ -0,0 +1,8 @@
+package day10.OuterInner;
+
+public class testdemo {
+    public static void main(String[] args) {
+        Outer.Inner oi = new Outer().new Inner();
+        oi.show();
+    }
+}

practice/test/bin/day10/OuterInner/testdemo.class

@@ -1,5 +1,18 @@
 package day10.PlayerAndCoach;
+/*
+①定义说英语接口                         成员方法:说英语();
+②定义抽象人类                           成员变量:姓名，年龄;构造方法:无参，带参;成员方法:get/set方法，吃饭(;
+③定义抽象教练类，继承人类                构造方法:无参，带参;成员方法:教();
+④定义抽象运动员类，继承人类              构造方法:无参，带参;成员方法:学习);
+⑤定义具体篮球教练类，继承教练类          构造方法:无参，带参;成员方法:重写吃饭(){...}，重写教(){..}
+⑥定义具体乒乓球教练类，继承教练类，实现说英语接口   
+        构造方法:无参，带参;成员方法:重写吃饭(){...}，重写教(){...}，重写说英语(){.….}
+⑦定义具体篮球运动员类，继承运动员类     构造方法:无参，带参;成员方法:重写吃饭(){.....}，重写学习(){…}
+⑧定义具体乒乓球运动员类，继承运动员类，实现说英语接口
+        构造方法:无参，带参;成员方法:重写吃饭(){...}，重写学习(){...}，重写说英语(){..}
+⑨定义测试类，写代码测试
 
+*/
 public class PersonDemo {
     public static void main(String[] args) {
         PingPangPlayer ppp = new PingPangPlayer();

practice/test/bin/day10/PlayerAndCoach/PersonDemo.class

@@ -0,0 +1,64 @@
+package day10;
+
+import java.util.Scanner;
+
+public class maopao {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        System.out.print("Please input how much numbers you have:");
+        int n = sc.nextInt();
+        int[] num = new int[n];
+        for (int i = 0; i < num.length; i++) {
+            String s = Ordinal(i + 1);
+            System.out.print("Please input the " + s + " number:");
+            num[i] = sc.nextInt();
+        }
+        System.out.print("Before sorting: ");
+        PrintArr(num);
+
+        int temp;
+        for (int i = 0; i < num.length - 1; i++) {
+            for (int j = 0; j < num.length - 1 - i; j++) {
+                if (num[j] < num[j + 1]) {
+                    temp = num[j];
+                    num[j] = num[j + 1];
+                    num[j + 1] = temp;
+                }
+            }
+        }
+        System.out.print("After sorting: ");
+        PrintArr(num);
+        sc.close();
+    }
+
+    public static void PrintArr(int[] num) {
+        System.out.print("[");
+        for (int i = 0; i < num.length; i++) {
+            if (i == num.length - 1) {
+                System.out.print(num[i]);
+            } else {
+                System.out.print(num[i] + ", ");
+            }
+        }
+        System.out.println("]");
+    }
+
+    public static String Ordinal(int a) {
+        String ord;
+        switch (a % 10) {
+            case 1:
+                ord = a + "st";
+                break;
+            case 2:
+                ord = a + "nd";
+                break;
+            case 3:
+                ord = a + "rd";
+                break;
+            default:
+                ord = a + "th";
+                break;
+        }
+        return ord;
+    }
+}