题目：
1、题目避免重复
2、可定制（数量/打印方式）
3、可以控制下列参数
是否有乘除法
是否有括号（最多可以支持十个参数参与计算）
数值范围
加减有无分数
除法有无余数
分析：
1、题目避免分析
保证首个参数不同
2、可定制
根据用户选择进行输出方式
3、是否有括号
保证右括号始终在最后一个数的后面
左括号可以在前面任意位置插入
4、有无负数
减号前一个数小于后一个则前后交换
5、有无余数
若有余数，则除数重新生成，直到无余数为止
源代码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace siz
{
class Program
{
static Random rnd = new Random();
static void Main(string[] args)
{
String filepath;
String path;
int num_min,num_max;//数据范围的上限和下限
int num_topic;//题目个数
int num_number;//表达式所含数字个数
int num_milde;
int num_output;
String word_ch;//判断乘除
String word_ys="N";//判断余数
String word_k="N";//判断括号
String word_fs="N";//判断有无负数
Console.WriteLine("请输入题目个数：");
num_topic = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("请输入表达式所含数字个数：");
num_number = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("请输入范围下限：");
num_min = Convert.ToInt32(Console.ReadLine());
Console.WriteLine("请输入范围上限：");
num_max=Convert.ToInt32(Console.ReadLine());
Console.WriteLine("是否有乘除（Y/N）：");
word_ch=Console.ReadLine();
if(num_number==2)
{
if(word_ch=="Y")
{
Console.WriteLine("是否有余数（Y/N）：");
word_ys=Console.ReadLine();
}
if(num_min>=0)
{
Console.WriteLine("是否有负数（Y/N）：");
word_fs=Console.ReadLine();
}
}
else
{
Console.WriteLine("是否有括号（Y/N）：");
word_k=Console.ReadLine();
}
int[,] Data = new int[num_topic,num_number];//保存数据
int[,] Operator=new int[num_topic,num_number];//保存运算符
int[] Data_first = new int[num_topic];//保存每个表达式的首个字符
int[,] kuohao=new int[num_topic,num_number];
if (word_ch == "Y")
{
for (int ii = 0; ii < num_topic; ii++)
{
for (int jj = 0; jj < num_number - 1; jj++)
{
Operator[ii, jj] = rnd.Next(1, 5);
}
Operator[ii, num_number - 1] = 5;
}
}
else
{
for (int i = 0; i < num_topic; i++)
{
for (int j = 0; j < num_number - 1; j++)
{
Operator[i, j] = rnd.Next(1, 3);
}
Operator[i, num_number - 1] = 5;
}
}
Data_first[0] = rnd.Next(num_min, num_max);//以第一个操作数的不同来使表达式不会重复
for (int s = 1; s < num_topic;s++ )
{
Data_first[s] = rnd.Next(num_min, num_max);
for (int h = 0; h < s-1; h++)
{
if (Data_first[s] == Data_first[h])
{
s--;
}
}
}
for (int x = 0; x < num_topic; x++)
{
Data[x, 0] = Data_first[x];
for (int y = 1; y < num_number; y++)
{
if (Operator[x,y-1] == 4)
{
for (; ; )
{
Data[x,y] = rnd.Next(num_min, num_max);
if (Data[x,y] != 0)
{
break;
}
}
}
else
{
Data[x, y] = rnd.Next(num_min, num_max);
}
}
}
if (word_fs == "N")
{
for (int i1 = 0; i1 < num_topic; i1++)
{
if (Operator[i1, 0] == 2&&Data[i1,0]<Data[i1,1])
{
num_milde = Data[i1, 1];
Data[i1, 1] = Data[i1, 0];
Data[i1, 0] = num_milde;
}
}
}
if (word_ch == "Y")
{
if (word_ys == "N")
{
for (int i2 = 0; i2 < num_topic; i2++)
{
if (Operator[i2, 0] == 4)
{
num_milde = Data[i2, 0] % Data[i2, 1];
while (num_milde != 0)
{
Data[i2, 1] = rnd.Next(1, Data[i2, 0]);
num_milde = Data[i2, 0] % Data[i2, 1];
}
}
}
}
}
if (word_k == "Y")
{
for (int j1 = 0; j1 < num_topic; j1++)
{
for (int j2 = 0; j2 < num_number-2; j2++)
{
kuohao[j1,j2] = rnd.Next(0, 2);
}
kuohao[j1,num_number-2]=0;
kuohao[j1,num_number-1]=0;
}
}
Console.WriteLine("请输入输出方式：\n1、控制台输出。2、输出到文本");
num_output = Convert.ToInt32(Console.ReadLine());
if (num_output == 1)
{
for (int x1 = 0; x1 < num_topic; x1++)
{
for (int x2 = 0; x2 < num_number; x2++)
{
if (kuohao[x1,x2] == 1)
{
Console.Write("(");
Console.Write(Data[x1, x2]);
if (Operator[x1, x2] != 5)
{
if (Operator[x1, x2] == 1)
{
Console.Write("+");
}
if (Operator[x1, x2] == 2)
{
Console.Write("-");
}
if (Operator[x1, x2] == 3)
{
Console.Write("*");
}
if (Operator[x1, x2] == 4)
{
Console.Write("/");
}
}
}
else
{
Console.Write(Data[x1, x2]);
if (Operator[x1, x2] != 5)
{
if (Operator[x1, x2] == 1)
{
Console.Write("+");
}
if (Operator[x1, x2] == 2)
{
Console.Write("-");
}
if (Operator[x1, x2] == 3)
{
Console.Write("*");
}
if (Operator[x1, x2] == 4)
{
Console.Write("/");
}
}
else
{
for (int x3 = 0; x3 < num_number; x3++)
{
if (kuohao[x1, x3] == 1)
{
Console.Write(")");
}
}
Console.Write("=");
}
}
}
Console.WriteLine();
}
}
else
{
Console.WriteLine("请输入文件路径(G:\\1.txt)：");
filepath=Console.ReadLine();
path = @filepath;
StreamWriter strm1 = File.CreateText(path);
for (int x1 = 0; x1 < num_topic; x1++)
{
for (int x2 = 0; x2 < num_number; x2++)
{
if (kuohao[x1, x2] == 1)
{
strm1.Write("(");
strm1.Write(Data[x1, x2]);
if (Operator[x1, x2] != 5)
{
if (Operator[x1, x2] == 1)
{
strm1.Write("+");
}
if (Operator[x1, x2] == 2)
{
strm1.Write("-");
}
if (Operator[x1, x2] == 3)
{
strm1.Write("*");
}
if (Operator[x1, x2] == 4)
{
strm1.Write("/");
}
}
}
else
{
strm1.Write(Data[x1, x2]);
if (Operator[x1, x2] != 5)
{
if (Operator[x1, x2] == 1)
{
strm1.Write("+");
}
if (Operator[x1, x2] == 2)
{
strm1.Write("-");
}
if (Operator[x1, x2] == 3)
{
strm1.Write("*");
}
if (Operator[x1, x2] == 4)
{
strm1.Write("/");
}
}
else
{
for (int x3 = 0; x3 < num_number; x3++)
{
if (kuohao[x1, x3] == 1)
{
strm1.Write(")");
}
}
strm1.Write("=");
}
}
}
strm1.WriteLine();
}
strm1.Close();
}
}
}
}
结果：
时间： 2024-07-28 12:35:48