生成算数问题*30

package pack1;

public class Suanshi {
private int can1;
private int can2;
private int result;
private char op;

public int getCan1() {        return can1;             
}                            public void setCan1(int can1)this.can1 = can1;        
}                            public int getCan2() {        return can2;             
}                            public void setCan2(int can2)this.can2 = can2;        
}                            public int getResult() {      return result;           
}                            public void setResult(int resthis.result = result;    
}                            public char getOp() {         return op;               
}                            public void setOp(char op) { this.op = op;            
}                            public Suanshi(int can1, int this.can1 = can1;        this.can2 = can2;        this.result = result;    this.op = op;            }                            
public int result1(){         if(op=='+')              return can1+can2;    else if(op=='-')         return can1-can2;    else if(op=='*')         return can1*can2;    else if(op=='/')         return can1/can2;    else                     return 0;            
}                            

}
//--------------------------
package pack1;

import java.math.BigInteger;
import java.util.Random;
import java.util.Scanner;

public class Test1 {
static Suanshi[] suanshi = new Suanshi[10086];
static int[] result = new int[10086];
static int arr1[] = new int[10086];
static int dui=0,cuo=0;
public static void menu() {
System.out.println("1.生成题目");
System.out.println("2.输出答案");
System.out.println("3.判断对错");
System.out.println("4.退出");
}

static Scanner sc = new Scanner(System.in);public static void main(String[] args) {int n = 0;while (true) {menu();n = sc.nextInt();switch (n) {case 1:generate();break;case 2:print();break;case 3:judge();break;case 4:System.exit(0);break;default:System.out.println("输入错误");break;}}}private static void judge() {System.out.println("正确"+dui+"个");System.out.println("错误"+cuo+"个");}private static void print() {for(int i=1;i<=30;i++){System.out.println(suanshi[i].getCan1()+" "+suanshi[i].getOp()+" "+suanshi[i].getCan2()+"="+suanshi[i].getResult());}}private static void generate() {Random rand1 = new Random();Random rand2 = new Random();Random rand3 = new Random();int a = rand3.nextInt(4) + 1;for (int i = 1; i <= 30; i++) {int x = rand1.nextInt(10) + 1;int y = rand2.nextInt(10) + 1;if (a == 1) {suanshi[i] = new Suanshi(x, y, x + y, '+');} else if (a == 2) {suanshi[i] = new Suanshi(x, y, x - y, '-');} else if (a == 3) {suanshi[i] = new Suanshi(x, y, x * y, '*');} else if (a == 4) {suanshi[i] = new Suanshi(x, y, x / y, '/');}}for(int i=1;i<=30;i++){System.out.println(suanshi[i].getCan1()+" "+suanshi[i].getOp()+" "+suanshi[i].getCan2()+"=");result[i]=sc.nextInt();if(result[i]==suanshi[i].result1()){System.out.println("正确");dui++;}else{System.out.println("错误");cuo++;}}}

}