第五次作业

package vcb;

import java.util.Scanner;

public class bjh {

 

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner input=new Scanner(System.in);

int a[]=new int[] {10,20,30,40,50};

int i;

System.out.println("数组a的值为");

for(i=0;i<a.length;i++) {

System.out.println(a[i]);

}

System.out.println("数组的长度为"+i);

 

}

 

}

 

 

package vcb;

import java.util.Scanner;

public class bjh {

 

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner input=new Scanner(System.in);

int a[]=new int[5] ;

int i;

for(i=0;i<a.length;i++) {

a[i]=input.nextInt();

}

System.out.println("数组a的值为");

for(i=0;i<a.length;i++) {

System.out.println(a[i]);

}

System.out.println("数组的长度为"+i);

}

}

 

 

 

package vcb;

import java.util.Scanner;

public class bjh {

 

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner input=new Scanner(System.in);

char a[]=new char[] {'c','h','i','n','a'};

int i;

System.out.println("数组a的值为");

for(i=0;i<a.length;i++) {

System.out.println(a[i]);

}

 

}

}

 

 

package vcb;

import java.util.Scanner;

public class bjh {

 

public static void main(String[] args) {

// TODO Auto-generated method stub

Scanner input=new Scanner(System.in);

int a[]=new int[5] ;

int i,x,sum=0,pin;

for(i=0;i<a.length;i++) {

x=i+1;

System.out.println("请输入学生"+x+"的成绩");

a[i]=input.nextInt();

}

for(i=0;i<a.length;i++) {

sum+=a[i];

}System.out.println("学生的总成绩为"+sum);

pin=sum/i;

System.out.println("平均分为"+pin);

}

}

 

package aaa;
import java.util.Random;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        int a[]=new int[] {12,53,23,44,53};
        for(int i=0;i<5;i++) {
            System.out.println("for输出:"+a[i]);
        }
        for(int i:a) {
            System.out.println("foreach输出:"+i);
        }
        for(int i=4;i>=0;i--) {
            System.out.println("for逆序输出:"+a[i]);
        }
    }
}

 

 

 

package aaa;
import java.util.Random;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner input=new Scanner(System.in);

        System.out.println("请输入想要创建多长的整型数组");
        int length=input.nextInt();
        int flag_j=0,flag_o=0;
        int a[]=new int[length];
        for(int i=0;i<length;i++) {
            System.out.println("请输入第"+(i+1)+"个数组元素");
            a[i]=input.nextInt();
            if(a[i]%2==0) {
                flag_o++;
            }else if( a[i]%2==1) {
                flag_j++;
            }
        }
        System.out.println("奇数个数为:"+flag_j+"\n偶数个数为:"+flag_o);
    }
}

 

 

package aaa;
import java.util.Random;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        int a[]=new int[100];
        for(int i=0;i<100;i++) {
            a[i]=(i+1);
        }
        for(int i:a) {
            System.out.println(i);
        }
    }
}

 

package aaa;
import java.util.Random;
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        double score[]=new double[] {10,20,30,40,50,60,70,80,90,100};
        for(double i:score) {
            System.out.print("原成绩"+i+"\t");
        }
        for(int i=0;i<10;i++) {
            if(score[i]+5>100) {
                score[i]=100;
                continue;
            }
            score[i]+=5;
        }
        System.out.println();
        for(double i:score) {
            System.out.print("现成绩"+i+"\t");
        }
    }
}