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(){};


}