Java第七次作业

1.

package mld;

public class Mld1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] a = { 10, 20, 30, 40, 50 };
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }
    }

}

 

 

2.

package mld;

import java.util.Scanner;

public class Mld {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] a = new int[5];
        Scanner input = new Scanner(System.in);
        for (int i = 0; i < a.length; i++) {
            a[i] = input.nextInt();
        }
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }

    }
}

 

 

3.

package mld;

public class Mld1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        char[] b = { 'c', 'h', 'i', 'n', 'a' };
        for (int j = 0; j < b.length; j++) {
            System.out.println(b[j]);
        }

    }
}

 

 

4.

package mld;

import java.util.Scanner;

public class Mld {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a[] = new int[5] ;
        double sum=0,b=0;
        Scanner input=new Scanner(System.in);
        System.out.println("请输入成绩");
        for (int i = 0; i < a.length; i++) {
            a[i]=input.nextInt();
            sum+=a[i];
            b=sum/5.0;
        }
        System.out.println("总和为"+sum+"平均为"+b);
    }

}

 

 

5.

package mld;

public class Mld1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int[] a = { 12, 53, 23, 44, 53 };
        System.out.println("for输出");
        for (int i = 0; i < a.length; i++) {
            System.out.println(a[i]);
        }
        System.out.println("foreach输出");
        for (int i : a) {
            System.out.println(i);
        }
        System.out.println("倒序输出");
        for (int i = a.length - 1; i >= 0; i--) {
            System.out.println(a[i]);
        }

    }
}

 

 

6.

package mld;

import java.util.Scanner;

public class Mld {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input = new Scanner(System.in);
        int[] a = new int[10];
        int jishu = 0;
        int oushu = 0;
        for (int i = 0; i < a.length; i++) {
            a[i] = input.nextInt();
            if (a[i] % 2 == 0) {
                oushu++;
            } else {
                jishu++;
            }
        }
        System.out.println("奇数有" + jishu + "个");
        System.out.println("偶数有" + oushu + "个");
    }

}

 

 

7.

package mld;

public class Mld1 {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        int a[]=new int[100];
        for (int i = 0; i < a.length; i++) {
            a[i]=i;
            System.out.println(a[i]+1);
        }
        
    }

}

 

 

8.

package mld;

import java.util.Scanner;

public class Mld {

    /**
     * @param args
     */
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner input=new Scanner(System.in);
        double [] i=new double[10];
        System.out.println("请输入十个成绩：");
        for(int j=0;j<i.length;j++){
            i[j]=input.nextDouble();
        }
        System.out.println("请输出十个成绩：");
        for(int j=0;j<i.length;j++){
            if(i[j]+5>=100){
                System.out.println(100);
            }else{
                System.out.println(i[j]+5);
            }
        }
   }
}