Java实现四则运算（一）

package random;
import java.util.*;
import java.math.*;
public class Com {

public static void main(String[] args) {
// TODO 自动生成的方法存根
int flag=(int)(Math.random()*100);
ComDem name1=new ComDem();
/*
* resu1 +
* resu2 -
* resu3 *
* resu4 /
*/
Random rand1 =new Random(8);
Random rand2 =new Random(10);
name1.num1=rand1.nextInt(101);
name1.num2=rand2.nextInt(101);
int resu1,resu2,resu3;
double resu4;
for(int i=0;i<30;i++)
{
/*
* 查重
*/
while(name1.num1==name1.num2)
{
name1.num1=rand1.nextInt(101);
name1.num2=rand2.nextInt(101);
}
System.out.println("第"+i+"组");
System.out.println("(1)");
resu1=name1.add();
System.out.println("(2)");
resu2=name1.sub();
System.out.println("(3)");
resu3=name1.mix();
System.out.println("(4)");
resu4=name1.chu();
name1.num1=rand1.nextInt(101);
name1.num2=rand2.nextInt(101);
}
}
}

 

 

 

package random;
import java.util.*;
import java.math.*;
public class ComDem {
public int num1;
public int num2;
public double getNum1() {
return num1;
}
public void setNum1(int num1) {
this.num1 = num1;
}
public double getNum2() {
return num2;
}
public void setNum2(int num2) {
this.num2 = num2;
}
public int getR1() {
num1=(int)(Math.random()*100);
return num1;
}
public int getR2() {
num2=(int)(Math.random()*100);
return num2;
}
public int add() {
System.out.println(num1+"+"+num2+"="+(num1+num2));
return num1+num2;
}
public int sub() {
System.out.println(num1+"-"+num2+"="+(num1-num2));
return num1-num2;
}
public int mix() {
System.out.println(num1+"*"+num2+"="+(num1*num2));
return num1*num2;
}
public double chu() {
System.out.println(num1+"/"+num2+"="+(num1/num2));
return (double)(num1/num2);
}
public ComDem(int num1, int num2){
this.num1 = num1;
this.num2 = num2;
}
ComDem(){};


}