day04

Author: TigerNiu

practice/test/.vscode/launch.json

@@ -4,6 +4,34 @@
     // 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 getmax",
+            "request": "launch",
+            "mainClass": "day04.getmax",
+            "projectName": "test_a0501e95"
+        },
+        {
+            "type": "java",
+            "name": "Launch arrdemo",
+            "request": "launch",
+            "mainClass": "day04.arrdemo",
+            "projectName": "test_a0501e95"
+        },
+        {
+            "type": "java",
+            "name": "Launch randomdemo",
+            "request": "launch",
+            "mainClass": "day04.randomdemo",
+            "projectName": "test_a0501e95"
+        },
+        {
+            "type": "java",
+            "name": "Launch continue1",
+            "request": "launch",
+            "mainClass": "day04.continue1",
+            "projectName": "test_a0501e95"
+        },
         {
             "type": "java",
             "name": "Launch and",

practice/test/bin/day04/arrdemo.class

@@ -0,0 +1,49 @@
+package day04;
+
+public class arrdemo {
+    public static void main(String[] args) {
+        int[] arr = new int[4];
+        System.out.println(arr);
+        System.out.println(arr[0]);
+        System.out.println(arr[1]);
+        System.out.println(arr[2]);
+        System.out.println(arr[3]);
+        arr[0] = 100;
+        arr[2] = 200;
+        arr[3] = 300;
+        arr[1] = 400;
+        System.out.println(arr);
+        System.out.println(arr[0]);
+        System.out.println(arr[1]);
+        System.out.println(arr[2]);
+        System.out.println(arr[3]);
+        int[] arr2 = arr;
+        System.out.println(arr2);
+        System.out.println(arr2[0]);
+        System.out.println(arr2[1]);
+        System.out.println(arr2[2]);
+        System.out.println(arr2[3]);
+        int[] arr3 = new int[]{1, 2, 3};
+        int[] arr4 = {2,3,4};
+        System.out.println(arr3[0] + arr3[1]);
+        System.out.println(arr4[0] + arr4[1]);
+        for (int i = 0; i < arr4.length; i++) {
+            System.out.println(arr4[i]);
+        }
+        int[] arr5 = {152, 122, 153, 466, 452, 495, 486};
+        int max = arr5[0];
+        for (int i = 1; i < arr5.length; i++) {
+            if (arr5[i] > max) {
+                max = arr5[i];
+            }
+        }
+        System.out.println(max);
+        int min = arr5[0];
+        for (int i = 1; i < arr5.length; i++) {
+            if (arr5[i] < min) {
+                min = arr5[i];
+            }
+        }
+        System.out.println(min);
+    }
+}

practice/test/bin/day04/continue1.class

@@ -0,0 +1,14 @@
+package day04;
+
+public class continue1 {
+    public static void main(String[] args) {
+        int a = 3;
+        for (int i = 1; i <= 13; i++) {
+            if (i%2 == 1) {
+                System.out.println(a);
+                continue;
+            }
+            System.out.println("----");
+        }
+    }
+}

practice/test/bin/day04/getmax.class

@@ -0,0 +1,16 @@
+package day04;
+import java.util.Scanner;
+public class getmax {
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+        System.out.print("请输入第一个数：");
+        int a = sc.nextInt();
+        System.out.print("请输入第二个数：");
+        int b = sc.nextInt();
+        getmax0(a, b);
+    }
+    public static void getmax0(int a, int b) {
+        int c = a > b ? a : b;
+        System.out.println("最大的数是：" + c);
+    }
+}

practice/test/bin/day04/randomdemo.class

@@ -0,0 +1,11 @@
+package day04;
+import java.util.Random;
+public class randomdemo {
+    public static void main(String[] args) {
+        Random j = new Random();
+        int i = j.nextInt(10);
+        System.out.println(i);
+        double a = j.nextDouble(13);
+        System.out.println(a);
+    }
+}