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C#实现24点算法源代码
出处:互联网 整理: 软晨网（RuanChen.com） 发布: 2009-08-14 浏览: 214 ::
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编写环境VS2005
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace 计算24
{
public partial class Form1 : Form
{
double A,B,C,D,NumberA,NumberB,NumberC,NumberD;
public void jisuan24(int i)
{
//24种转换
switch (i)
{
case 1:
A = NumberA; B = NumberB; C = NumberC; D = NumberD;
break;
case 2:
A = NumberA; B = NumberB; D = NumberC; C = NumberD;
break;
case 3:
A = NumberA; C = NumberB; B = NumberC; D = NumberD;
break;
case 4:
A = NumberA; C = NumberB; D = NumberC; B = NumberD;
break;
case 5:
A = NumberA; D = NumberB; B = NumberC; C = NumberD;
break;
case 6:
A = NumberA; D = NumberB; C = NumberC; B = NumberD;
break;
case 7:
B = NumberA; A = NumberB; C = NumberC; D = NumberD;
break;
case 8:
B = NumberA; A = NumberB; D = NumberC; C = NumberD;
break;
case 9:
B = NumberA; C = NumberB; A = NumberC; D = NumberD;
break;
case 10:
B = NumberA; C = NumberB; D = NumberC; A = NumberD;
break;
case 11:
B = NumberA; D = NumberB; A = NumberC; C = NumberD;
break;
case 12:
B = NumberA; D = NumberB; C = NumberC; A = NumberD;
break;
case 13:
C = NumberA; A = NumberB; B = NumberC; D = NumberD;
break;
case 14:
C = NumberA; A = NumberB; D = NumberC; B = NumberD;
break;
case 15:
C = NumberA; B = NumberB; A = NumberC; D = NumberD;
break;
case 16:
C = NumberA; B = NumberB; D = NumberC; A = NumberD;
break;
case 17:
C = NumberA; D = NumberB; A = NumberC; B = NumberD;
break;
case 18:
C = NumberA; D = NumberB; B = NumberC; A = NumberD;
break;
case 19:
D = NumberA; A = NumberB; B = NumberC; C = NumberD;
break;
case 20:
D = NumberA; A = NumberB; C = NumberC; B = NumberD;
break;
case 21:
D = NumberA; B = NumberB; A = NumberC; C = NumberD;
break;
case 22:
D = NumberA; B = NumberB; C = NumberC; A = NumberD;
break;
case 23:
D = NumberA; C = NumberB; A = NumberC; B = NumberD;
break;
case 24:
D = NumberA; C = NumberB; B = NumberC; A = NumberD;
break;
}
}
public Form1()
{
InitializeComponent();
}
private void Form1_Load(object sender, EventArgs e)
{
}
private void button1_Click(object sender, EventArgs e)
{
NumberA=Convert.ToDouble(txt1.Text);
NumberB=Convert.ToDouble(txt2.Text);
NumberC=Convert.ToDouble(txt3.Text);
NumberD=Convert.ToDouble(txt4.Text);
lblshow.Text="解题中....";
//1种算法
for(int i=1;i<=24;i++)
{
jisuan24(i);
if((A+B+C+D)==24)
lblshow.Text=A + "+" +B + "+"+ C + "+" + D +"=24";
if((A+B+C-D)==24)
lblshow.Text=A + "+" +B + "+"+ C + "-" + D +"=24";
//3
if(A * B + C + D==24)
lblshow.Text=A + "*" +B + "+"+ C + "+" + D +"=24";
//4
if( A * B + C - D==24)
lblshow.Text=A + "*" +B + "+"+ C + "-" + D +"=24";
//5
if( A * B * C + D==24)
lblshow.Text=A + "*" +B + "*"+ C + "+" + D +"=24";
//6
if(A * B * C - D==24)
lblshow.Text=A + "*" +B + "*"+ C + "-" + D +"=24";
//7
if(A * B * C * D==24)
lblshow.Text=A + "*" +B + "*"+ C + "*" + D +"=24";
//8
if(A * B + C * D==24)
lblshow.Text=A + "*" +B + "+"+ C + "*" + D +"=24";
//9
if(A * B - C * D==24)
lblshow.Text=A + "*" +B + "-"+ C + "*" + D +"=24";
//10
if(A / B + C + D==24)
lblshow.Text=A + "/" +B + "+"+ C + "+" + D +"=24";
//11
if(A * B / C + D==24)
lblshow.Text=A + "*" +B + "/"+ C + "+" + D +"=24";
//12
if(A * B / C - D==24)
lblshow.Text=A + "*" +B + "/"+ C + "-" + D +"=24";
//13
if( A * B * C / D==24)
lblshow.Text=A + "*" +B + "*"+ C + "/" + D +"=24";
//14
if(A * B / C / D==24)
lblshow.Text=A + "*" +B + "/"+ C + "/" + D +"=24";
//15
if( (A + B) * C / D==24)
lblshow.Text=(A + "+" +B) + "*"+ C + "/" + D +"=24";
//16
if((A + B) * C * D==24)
lblshow.Text=(A + "+" +B) + "*"+ C + "*" + D +"=24";
//17
if((A + B) * (C + D)==24)
lblshow.Text=(A + "+" +B) + "*"+ (C + "+" + D) +"=24";
//18
if((A + B) * (C - D)==24)
lblshow.Text=(A + "+" +B) + "*"+ (C + "-" + D) +"=24";
//19
if((A - B) * (C - D)==24)
lblshow.Text=(A + "-" +B) + "*"+ (C + "-" + D) +"=24";
//20
if((A - B) * C / D==24)
lblshow.Text=(A + "-" +B) + "*"+ (C + "/" + D) +"=24";
//21
if((A - B) * C * D==24)
lblshow.Text=(A + "-" +B) + "*"+ (C + "*" + D) +"=24";
//22
if((A + B + C) * D==24)
lblshow.Text=(A + "+" +B + "+"+ C) + "*" + D +"=24";
//23
if((A + B + C) / D==24)
lblshow.Text=(A + "+" +B + "+"+ C) + "/" + D +"=24";
//24
if((A + B - C) * D==24)
lblshow.Text=(A + "+" +B + "-"+ C) + "*" + D +"=24";
//25
if(A * (B + C) + D==24)
lblshow.Text=A + "*" +(B + "+"+ C) + "+" + D +"=24";
//26
if( A * (B - C) + D==24)
lblshow.Text=A + "*" +(B + "-"+ C) + "+" + D +"=24";
//27
if( A * (B + C) - D==24)
lblshow.Text=A + "*" +(B + "+"+ C) + "-" + D +"=24";
//28
if(A * (B - C) - D==24)
lblshow.Text=A + "*" +(B + "-"+ C) + "-" + D +"=24";
//29
if(A + (B + C) / D==24)
lblshow.Text=A + "+" +(B + "+"+ C) + "/" + D +"=24";
if((A-B/C)*D==24)
//30
lblshow.Text=(A + "-" +B + "/"+ C) + "*" + D +"=24";
}
if(lblshow.Text=="解题中....")
{
lblshow.Text="此题无解";
}
}
private void button2_Click(object sender, EventArgs e)
{
Random rd=new Random();
int a=rd.Next(1,11);
int b=rd.Next(1,11);
int c=rd.Next(1,11);
int d=rd.Next(1,11);
//if(a==)
txt1.Text=a.ToString();
txt2.Text=b.ToString();
txt3.Text=c.ToString();
txt4.Text=d.ToString();
lblshow.Text="出题完毕，请解答";
}
}
}
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