4.16

1.有10个评委打分,(去掉一个最高一个最低)求平均分。

package Text;
public class zuoye9 {
    public static void main(String[] args) {
        int a[] = {1,2,2,4,5,6,5,8,8,10};
        int q = 0;
        for (int i = 0; i < a.length; i++) {
            for (int j = 0; j < a.length; j++) {
                int temp = 0;
                if (a[i]>a[j]) {
                    temp=a[i];
                    a[j]=temp;
                    break;
                }
            }
        }
        a[0]=0;
        a[9]=0;
        for (int x = 0; x < a.length; x++) {
            q=a[x]+q;
        }
        q=q/8;
        System.out.println("平均分是：" + q);
    }

}

 

 

2.Java随机数，生成一个长度为10的随机数组（每个数的范围是0~99），排序后输出。

{45,88,72,32,}

package Text;
import java.util.Random;
public class zuoye9 {
        public static void main(String[] args) {
            int[] a = new int[10];
            Random r = new Random();
            for (int i = 0; i < 10; i++) {
                a[i] = r.nextInt(100);
            }
            for (int i = 0; i < a.length - 1; i++) {
                for (int j = 0; j < a.length - 1 - i; j++) {
                    if (a[j] > a[j + 1]) {
                        int temp = a[j];
                        a[j] = a[j + 1];
                        a[j + 1] = temp;
                    }
                }
            }
            System.out.println("排序后输出为:");
            for (int i = 0; i < 10; i++) {
                System.out.println( a[i]);
            }
        }
    }

 

 

3.制作彩票35选7程序。 （就是1~35随机生成7个不重复的数）

package Text;

import java.io.IOException;
import java.util.Scanner;

public class zuoye9 {
    public static void main(String[] args) throws IOException {
        Scanner scanner = new Scanner(System.in);
        int[] r = new int[7];
        boolean[] b = new boolean[31];
        for (int i = 0; i < 7; i++) {
            int tem = (int) (Math.random() * 30) + 1;
            while (b[tem] == true)
                tem = (int) (Math.random() * 30) + 1;
            r[i] = tem;
            b[tem] = true;
        }
        int[] in = new int[7];
        for (int i = 0; i < 7; i++) {
            in[i] = scanner.nextInt();
        }
        System.out.println("Random numbers:");
        for (int i = 0; i < 7; i++) {
            System.out.print(r[i] + " ");
        }
        System.out.println();
        System.out.println("Your numbers:");
        for (int i = 0; i < 7; i++) {
            System.out.print(in[i] + " ");
        }
        System.out.println();
        System.out.println("The same numbers:");
        for (int i = 0; i < 7; i++)
            for (int j = 0; j < 7; j++) {
                if (in[i] == r[j]) {
                    System.out.print(in[i] + " ");
                }
            }
        System.out.println();
    }
}

 

 　

4.定义一个长度为10的int数组(如果没有特殊说明,静态赋值动态赋值都可以),统计数组中的最大值、最小值、以及奇 数和偶数的个数

package Text;

import java.util.Scanner;

public class zuoye9 {
    public static void main(String[] args) {
                Scanner input = new Scanner(System.in);
                int[] a = new int[10];
                System.out.println("请输入10个数:");
                for (int i = 0; i < 10; i++) {
                    a[i] = input.nextInt();
                }
                int max = a[0], min = a[0], m = 0, n = 0;
                for (int i = 0; i < 10; i++) {
                    if (max < a[i]) {
                        max = a[i];
                    }
                    if (min > a[i]) {
                        min = a[i];
                    }
                    if (a[i] % 2 == 0) {
                        m++;
                    }
                    if (a[i] % 2 != 0) {
                        n++;
                    }
                }
                System.out.println("最大值是:" + max + " 最小值是:" + min + " 奇数的个数是:" + n + " 偶数的个数是:" + m);
            }
        }

 

标签：10,4.16,int,System,++,println,out
来源： https://www.cnblogs.com/cuixiaorongshazi/p/12711762.html