**Java程序设计（2020）”实验报告** **实验目的** 1.熟练掌握 Java语言一维数组的声明、初始化和元素的引用。 2.熟练掌握 Java语言多维数组的声明、初始化和元素的引用。 3.熟练掌握循环结构在数组中的应用。 **实验内容：** （1）计算10个数中的最大、最小值（2）计算10个数的均值mean和标准差deviation （3）计算今天是星期几（4）计算矩阵的外围元素之和，主对角线元素之和以及副对角线元素之和 **实验步骤：** 1.程序源代码 ``` import java.util.Scanner; public class Task_1 { public static void main(String[] args) { int[] arr = new int[10]; Scanner in = new Scanner(System.in); for (int m = 0; m < 10; m++) { arr[m] = in.nextInt(); } int max = arr[0]; int j; int a = 1; for (j = 1; j < arr.length; j++) { if (arr[j] > max) { max = arr[j]; a = j; } } int i; int b = 1; int min = arr[0]; for (i = 1; i < arr.length; i++) { if (arr[i] < min) { min = arr[i]; b = i; } } System.out.println(max + " " + a); System.out.println(min + " " + b); } } ``` ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1271259-20200417-1587135047956) **2.程序源代码** ``` import java.util.Scanner; public class Task_1{ public static void main(String args[]) { int[] arr1 = new int[8]; int[] arr2 = new int[8]; int day = 0, sum = 0; Scanner sc = new Scanner(System.in); for (int i = 0; i < 8; i++) { arr1[i] = sc.nextInt(); arr2[i] = sc.nextInt(); } for (day = 1; day <= 7; day++) { sum = 0; for (int i = 0; i < 8; i++) { if (((day == arr1[i]) && (day == arr2[i])) || ((day != arr1[i] && day != arr2[i]))) sum++; if (sum == 8) { System.out.println(day); break; } sc.close(); } } } } ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1271259-20200417-1587135055817) ``` **3.程序源代码** ``` package com.atguigu.java; import java.util.Scanner; public class sum{ public static void main(String args[]) { int[] arr1 = new int[8]; int[] arr2 = new int[8]; int day = 0, sum = 0; Scanner sc = new Scanner(System.in); for (int i = 0; i < 8; i++) { arr1[i] = sc.nextInt(); arr2[i] = sc.nextInt(); } for (day = 1; day <= 7; day++) { sum = 0; for (int i = 0; i < 8; i++) { if (((day == arr1[i]) && (day == arr2[i])) || ((day != arr1[i] && day != arr2[i]))) sum++; if (sum == 8) { System.out.println(day); break; } sc.close(); } } } } ``` ![图片描述](https://dn-simplecloud.shiyanlou.com/courses/uid1271259-20200417-1587135072434) **4.程序源代码** ``` package com.atguigu.java; import java.util.Scanner; public class sum{ public static void main(String args[]) { Scanner sc=new Scanner(System.in); int[][] arr=new int[4][4]; int sum1=0; int sum2=0; int sum3=0; int i,j; for(i=0;i

“Java程序设计（2020）”实验报告