大二上学期 （2019-9-16 ） java课堂第一次随机测试和课上知识整

 1 import java.util.Random;
 2 import java.util.Scanner;
 3 public class computer {
 4     public static Scanner input=new Scanner(System.in);
 5     public static int d1 = new Random().nextInt(100);
 6     public static int d2 = new Random().nextInt(100);
 7     public static int d3 = new Random().nextInt(100);
 8     public static int a[][]=new int[100000][2] ;
 9     public static int d[]=new int[100000];
10     public static void main(String[] args) {
11         int c;
12         int b;
13         System.out.println("请输入总题数：");
14          c=input.nextInt();
15         System.out.println("请输入每行的题数：");
16           b=input.nextInt();
17         for(int i=0;i<c;i++) {
18             if((i)%b==0)
19                 System.out.println();
20             System.out.print((i+1)+":");
21             d1 = new Random().nextInt(100);
22             System.out.print(d1);
23             d2 = new Random().nextInt(100);
24             d3 = new Random().nextInt(100);
25             a[i][0]=d1;//保存在二维数组中
26             a[i][1]=d3;
27             d[i]=d2;
28             
29             for(int j=0;j<i;j++) {
30                 if(a[j][0]==d1&&a[j][1]==d3&&d[j]==d2) {//查重
31                     d3 = new Random().nextInt(100);
32                     while(d3==a[i][1]) {
33                         d3 = new Random().nextInt(100);
34                 }
35                 d3 = new Random().nextInt(100);
36                 while(d3==a[i][1]) {
37                     
38                 }
39             }}
40             if(d2%4==0)
41                 System.out.print("+");
42             if(d2%4==1) {
43                 System.out.print("-");
44                 
45                     while(d1<d3) {
46                         d3 = new Random().nextInt(100);
47                     }
48                 
49             }
50                 
51             if(d2%4==2) {
52                 System.out.print("*");
53                 while(d1*d3>=100) {
54                     d3 = new Random().nextInt(100);
55                 }
56             }
57                 
58             if(d2%4==3) {
59                 System.out.print("/");
60                 while(d3!=0&&d1/d3!=0){
61                     d3 = new Random().nextInt(100);
62                 }
63             }
64             System.out.print(d3);
65             System.out.print("=");        
66             System.out.print("   ");
67         }  
68     } 
69 }