第七周上机练习

1.

package  test;
import java.util.*;
public class LH {

    public static void main(String[] args) {
        int []a=new int[10];
        Scanner input=new Scanner(System.in);
        for (int i = 0; i < a.length; i++) {
            int x=input.nextInt();
            a[i]=x;
            
            
        }
        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;
                }
            }
        }
       
           
        int sum=0;
         for (int i = 0; i < a.length; i++) {
                sum=a[1]+a[2]+a[3]+a[4]+a[5]+a[6]+a[7]+a[8];
                
            
        }
         System.out.println(""+sum/8);
    }
}

2.

package test;

import java.util.Random;

public class LH{

    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("排序后为:");
        for (int i = 0; i < 10; i++) {
            System.out.println( a[i]);
        }
    }
}

3.

package test;

import java.util.Random;

public class LH {
    public static void main(String[] args) {
        int []a=new int[7];
        Random r=new Random();
        for(int i=0;i<a.length;i++) {
            int num=r.nextInt(35)+1;
            a[i]=num;
        }
        for(int i=0;i<a.length;i++) {
            for(int j=0;j<a.length;j++) {
                while(a[i]==a[j]) {
                    if(i==j) {
                        break;
                    }
                    int num=r.nextInt(35)+1;
                    a[i]=num;
                }
            }
        }
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }
    }
}

4.

import java.util.Scanner;

public class LH {
    public static void main(String[] args) {
        int []arr= new int[10];
        int a=0;
        int b=0;
        Scanner ac=new Scanner(System.in);
        System.out.println("请输入10个数:");
        for(int i=0;i<arr.length;i++) {
            arr[i]=ac.nextInt();
        }
        int max=arr[0];
        int min=arr[0];
        for(int i=0;i<arr.length;i++) {
            if(arr[i]>max) {
                max=arr[i];
            }else{
                min=arr[i];
            }
            if(arr[i]%2==0) {
                b++;
            }else {
                a++;
            }
        }
        System.out.println("最大值为:"+max+"最小值为:"+min);
        System.out.println("奇数和为:"+a+"偶数和为:"+b);
    }
}