实训作业

package 编程题;

import java.util.Scanner;

public class Exam3 {

public Exam3() {
// TODO Auto-generated constructor stub
}

public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.print("请输入一个数:");
Scanner qw = new Scanner(System.in);
int a = qw.nextInt();
int i,j;
for(i=2;i<a;i++) {
j=a%i;
if(j==0) {
System.out.print("不是素数");
break;
}else
{
System.out.print("是素数");
break;
}
}
}

}

 

 

 

 

 

package 编程题;

public class Exam2 {
public static void main(String [] are){
int i,j,k,a;
for(i=1;i<=4;i++){
for(j=1;j<=4 && j!=i;j++){
for(k=1;k<=4 && k!=i && k!=j;k++){
a=100*i+10*j+k;
System.out.print(a+" ");

}
}
}

}
}

 

 

 

 

 

package 编程题;

import java.util.Scanner;

public class Exam1 {
public static void main(String [] are) {
System.out.print("请输入一个整数：");
@SuppressWarnings("resource")
Scanner input = new Scanner(System.in);
int a = input.nextInt();
int b = (int) ((a*10+5)/2+3.14159);
System.out.println("加密结果为："+b);
}
}

 

package 编程题;

import java.util.Scanner;

public class ja {

public ja() {
// TODO Auto-generated constructor stub
}

public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.print("请输入半径：");
Scanner sd = new Scanner(System.in);
int r = sd.nextInt();
double area = r*r*3.14;
System.out.println("圆面积为："+area);

}

}

 

package 编程题;

public class qw {

public qw() {
// TODO Auto-generated constructor stub
}

public static void main(String[] args) {
// TODO Auto-generated method stub
int x,y,z;
for(x=1;x<20;x++) {
for(y=1;y<33;y++) {
for(z=1;z<300;z++) {
if(100-(5*x+3*y+z/3)==0&&(x+y+z)==100)
System.out.println("公鸡"+x+"母鸡"+y+"小鸡"+z);
}

}

}
}

}

package 编程题;

import java.util.Scanner;

public class Exam4 {

public Exam4() {
// TODO Auto-generated constructor stub
}

public static void main(String[] args) {
// TODO Auto-generated method stub
System.out.print("请输入一个数:");
Scanner qw = new Scanner(System.in);
int a = qw.nextInt();
if(a%2==0) {
System.out.println("是偶数");
}else
System.out.println("是奇数");
}

}