软件工程概论作业02

     这周，我们上了软件工程概论第三节课，终于体会到的程序员的不易，作业一次比一次难，老师提出的要求越来越多，就像未来的客户一样，要求永远无止境。

     这次还在上次的要求上提出了新的要求，要求可选择整数还是分数，可指定范围，不可重复。

     可怜的二柱子同学，老师又对他的自动出题系统提出了新的要求： 可以控制下列参数: 是否有乘除法； 是否有括号(最多可以支持十个数参与计算)； 数值范围； 加减有无负数； 除法有无余数！

      

日期	开始时间	结束时间	中断时间	净时间	活动	备注	C	U
3/10	14:00	16:00		120	上课	软件工程概论B
	16:20	17:00		40		把程序的思路写下来
3/12	15:00	18:00		180	编程	四则运算2
	18:30	19:00		30	编程	四则运算2
3/12	20:00	21:00		60	写博客	四则运算2 的报告

package demo;
import java.*;
import java.util.*;


public class Main {
    public static void main(String args[])
    {
        Scanner scan;
        scan = new Scanner(System.in);
        int flag;//标志
        int max;//最大值范围
        int ysf;//运算符
        int num;//数量
        int i = 0;
        char[] ch = new char[4];
        ch[0] = '+';
        ch[1] = '-';
        ch[2] = '*';
        ch[3] = '/';
        String[] str = new String[200];
        str[0] = null;
        String s = null;
        System.out.println("请输入你需要的题目形式：1、整数类型  2、分数类型");
        flag = scan.nextInt();
        int a,b,a1,b1;
        double A,B,A1,B1;
        if(flag == 1)
        {
            System.out.println("请输入您希望的最大数值范围：");
            max = scan.nextInt();
            System.out.println("请输入题目的数量：");
            num = scan.nextInt();
            while(num > 0)
            {
                a = (int)(Math.random()*max);
                b = (int)(Math.random()*max) + 1;
                ysf = (int)(Math.random()*4);
                s = a + " " + ch[ysf] + " " + b + " =";
                if(Check(str,s,i) != 1)
                {
                    str[i] = s;
                    System.out.print(str[i]);
                    i ++;
                }
                if(ysf == 0)
                {
                    System.out.println(intjia(a,b));
                }
                if(ysf == 1)
                {
                    System.out.println(intjian(a,b));
                }
                if(ysf == 2)
                {
                    System.out.println(intcheng(a,b));
                }
                if(ysf == 3)
                {
                    System.out.println(intchu(a,b));
                }
            }
        }
        int flagA = 0;
        int flagB = 0;
        if(flag == 2)
        {
            System.out.println("请输入题目的数量：");
            num = scan.nextInt();
            for(int j = 0;i < num;i ++)
            {
                flagA = SuiJileixing();
                flagB = SuiJileixing();        
                if(flagA == 1 && flagB == 0)
                {
                    a = SuiJi1();
                    b = SuiJi1();
                    b1 = SuiJi1() + 1;
                    if(b < b1)
                    {
                        b = b;
                    }
                    else 
                    {
                        b1 = b1 + b;
                    }
                    ysf = SuiJiyunsuanfu();
                    s = a + " " + ch[ysf] + " (" + b + "/" + b1 + ") = ";
                    if(Check(str,s,i) != 1)
                    {
                        str[i] = s;
                        System.out.print(str[i]);
                        A = (double)a;
                        B = (double)b;
                        B1 = (double)b1;
                        show(A,B/B1,ysf);
                        i ++;
                    }
                }
                else if(flagA == 0 && flagB == 1)
                {
                    a = SuiJi1();
                    a1 = SuiJi1() + 1;
                    b = SuiJi1();
                    if(a > a1)
                    {
                        a1 = a + a1;
                    }
                    ysf = SuiJiyunsuanfu();
                    s = "(" + a + "/" + a1 + ") " + ch[ysf] + " " + b + " = ";
                    if(Check(str,s,i) != 1)
                    {
                        str[i] = s;
                        System.out.print(str[i]);
                        A = (double)a;
                        A1 = (double)a1;
                        B = (double)b;
                        show(A/A1,B,ysf);
                        i ++;
                    }
                }
                else
                {
                    a = SuiJi1();
                    a1 = SuiJi1() + 1;
                    b = SuiJi1();
                    b1 = SuiJi1() + 1;
                    if(a > a1)
                    {
                        a1 = a + a1;
                    }
                    if(b > b1)
                    {
                        b1 = b + b1;
                    }
                    ysf = SuiJiyunsuanfu();
                    s =  "(" + a + "/" + a1 + ") " + ch[ysf] + " " + b + "/" + b1 + " = ";
                    if(Check(str,s,i) != 1)
                    {
                        str[i] = s;
                        System.out.print(str[i]);
                        A = (double)a;
                        A1 = (double)a1;
                        B = (double)b;
                        B1 = (double)b1;
                        show(a/a1,b/b1,ysf);
                        i ++;
                    }
                }

                
                
            }
            
        
        }
        
    }
    public static int Check(String s[],String str,int ss)
    {
        int qqq = 0;
        for(int i = 0;i < ss;i ++)
        {
            if(str.equals(s[ss]))
            {
                qqq = 1;
                break;
            }
        }
        return qqq;
    }
    //整数加法
    public static int intjia(int a,int b)
    {
        int c;
        c = a + b;
        return c;
    }
    //整数减法
    public static int intjian(int a,int b)
    {
        int c;
        c = a + b;
        return c;
    }
    //整数乘法
    public static int intcheng(int a,int b)
    {
        int c;
        c = a * b;
        return c;
    }
    //整数除法
    public static int intchu(int a,int b)
    {
        int c;
        c = a / b;
        return c;
    }
    public static int SuiJileixing()
    {
        int flag = (int)(Math.random()*2);
        return flag;
    }
    public static int SuiJi1()
    {
        int a;
        a = (int)(Math.random()*100);
        return a;
    }
    public static int SuiJiyunsuanfu()
    {
        int a;
        a = (int) (Math.random()*4);
        return a;
    }
    public static void show(double a,double b,int k)
    {
        double c ;
        if(k == 0)
        {
             c = a + b;
            System.out.println((int)c);
        }
        if(k == 1)
        {
            c = (int) (a - b);
            System.out.println((int)c);
        }
        if(k == 2)
        {
            c = (int) (a * b);
            System.out.println((int)c);
        }
        if(k == 3)
        {
            c = (int) (a / b);
            System.out.println((int)c);
        }
    }

}