第七次作业

package wen;

 

public class paixu {

 

public static void main(String[] args) {

// TODO Auto-generated method stub

        int x[]= {1,5,7,3,2,9,4};

        paixu(x);

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

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

        }

}

 

public static void paixu(int a[]) {

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;

}

}

}

 

}

}

package wen;

 

public class jc {

 

public static void main(String[] args) {

// TODO Auto-generated method stub

int sum1=jc(5);

System.out.println(sum1);

}

public static int jc(int n) {

int sum=1;

for(int i=1;i<=n;i++) {

sum*=i;

}

return sum;

}

 

}

package wen;

 

import java.util.Scanner;

 

public class year {

 

public static void main(String[] args) {

// TODO Auto-generated method stub

        year();

}

public static void year() {

Scanner input=new Scanner(System.in);

System.out.println("输入年份：");

int year=input.nextInt();

if(year%4==0&&year%100!=0||year%400==0) {

System.out.println(year+"是闰年");

}else {

System.out.println(year+"是平年");

}

 

}

 

}

package wen;

 

public class llt {

 

public static double Area(double a,double b) {

return a*b;

}

public static double Area(double r) {

return r*r*Math.PI;

}

public static void main(String[] args) {

System.out.println(Area(5,8));

System.out.println(Area(10));

}

 

}

package wen;

 

public class ComputerTest {

 

public static void main(String[] args) {

// TODO Auto-generated method stub

Computer c1=new Computer('黑',24);

c1.showComputer();

Computer c2=new Computer('红',32);

        c2.showComputer();

}

 

}

 

class Computer {

private char color;

private int cpuNum;

 

public Computer() {

 

}

 

public Computer(char color,int cpuNum) {

this.color=color;

this.cpuNum=cpuNum;

}

public char getColor() {

return color;

}

 

public void setColor(char color) {

this.color=color;

}

 

public int getcpuNum() {

return cpuNum;

}

 

public void setcpuNum(int cpuNum) {

this.cpuNum=cpuNum;

}

public void showComputer() {

System.out.println("笔记本的颜色："+getColor());

System.out.println("笔记本的CPU型号："+getcpuNum());

}

}