第七周上机作业

1.有10个评委打分,(去掉一个最高一个最低)求平均分

public class Tcha {
    public static void main(String[] args) {
         int[] score = new int[10];
            Scanner input = new Scanner(System.in);
            System.out.println("请输入10位评委的分数");
            for (int i = 0; i < score.length; i++){
                score[i] = input.nextInt();
            }
            for (int i = 0; i < score.length - 1; i++){
                for (int j =0; j < score.length - 1 - i; j++){
                    if (score[j] > score[j + 1]){
                        int m= score[j];
                        score[j] = score[j + 1];
                        score[j + 1] = m;
                    }
                }
            }
            int sum = 0;
            for (int i = 1; i < score.length - 1; i++)
            {
                sum += score[i];
            }
            System.out.println("平均分为:"+sum/(score.length-2.0));
    }
}

2.自学一下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。

package df;
import java.util.Random;
public class Tcha {
    public static void main(String[] args) {
        int a[] = new int[10];
       Random m=new Random();
        for (int i = 0; i < a.length; i++) {
            a[i] = m.nextInt(100);
        }
        for (int i = 0; i < a.length - 1; i++) {
            for (int n = 0; n < a.length - 1 - i; n++) {
                if (a[n] > a[n + 1]) {
                    int c = a[n];
                    a[n] = a[n + 1];
                    a[n + 1] = c;
                }
            }
 
        }
        for (int x = 0; x < a.length; x++) {
            System.out.println(a[x]);
        }
    }
}

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 df;
import java.util.Random;
public class Tcha {
    public static void main(String[] args) {
        Random r = new Random();
        int[] s = new int[7];
        for (int i = 0; i < s.length; i++) {
            s[i] = r.nextInt(35) + 1;
        }
            System.out.println("35选7号码:");
        for (int i = 0; i < s.length; i++) {
            System.out.print(s[i]+" ");
        }
    }
}

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 df;
public class Tcha {
    public static void main(String[] args) {
        int[] a = new int[]{55,67,78,98,34,52,21,77,99,56};
        int max=a[0];
        int mini=a[0];
        int jis=0;
        int ous=0;
        for (int i = 1; i <a.length ; i++) {
            if (a[i]>max){
                max=a[i];
            }
        }
        for (int j = 1; j <a.length ; j++) {
            if (a[j]<mini){
                mini=a[j];
            }
        }
        for (int m = 0; m< a.length; m++) {
            if (a[m]%2==0){
                ous+=1;
            }else {
                jis+=1;
            }
        }
        System.out.println("最大值为"+max+",最小值为"+mini+",偶数有"+ous+"个,"+"奇数有"+jis+"个");
    }
}