.net（简单的解密小程序和小鸡问题的求解）

/*
* 破解密码：tbizljbqlfcivqbh
*         已知加密方式
*
*
*/

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TestDecoding
{
class Program
{
static void Main(string[] args)
{
// 1，得到密文字符串
string coding = "tbizljbqlfcivqbh";

// 2，将密文转为字符数组
char[] codingCharArray = coding.ToCharArray();

// 3，破解密文
for (int i = 1; i <= 25; i++)
{
Console.WriteLine("第{0}种可能明文",i);

for (int j = 0; j < codingCharArray.Length; j++)
{
if (codingCharArray[j] + (char)i > 'z')
{
codingCharArray[j] = (char)(codingCharArray[j] + (char)(i - 26));
}
else
{
codingCharArray[j] += (char)i;
}
}

foreach (char c in codingCharArray)
{
Console.Write(c);
}

Console.WriteLine();
}
}
}
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace TestChecken
{
class Program
{
static void Main(string[] args)
{
// 购买公鸡个数
int maleChCount = 1;

// 购买母鸡个数
int famaleChCount = 1;

// 购买小鸡个数
int littleChCount = 1;

// 统计方案个数
int index = 1;
// 用三重循环遍历求值
for (maleChCount = 1; maleChCount < 100; maleChCount++)
{
for (famaleChCount = 1; famaleChCount < 100; famaleChCount++)
{
for (littleChCount = 1; littleChCount < 100; littleChCount++)
{
if((100 == 5 * maleChCount + 3 * famaleChCount + littleChCount / 3)
&& (100 == maleChCount + famaleChCount + littleChCount))
{
Console.WriteLine("方案" + index + " --------> " + "公鸡：" + maleChCount + ",   母鸡：" + famaleChCount
+ "   ,小鸡：" + littleChCount);
index++;
}

}
}

}
}
}
}