6个嫌疑犯

using System;
using System.Collections.Generic;
using System.Text;
using System.Collections; 
/** 
 * 某地刑侦大队对涉及六个嫌疑人的一桩疑案进行分析： 
 * A、B至少有一人作案； 
 * A、E、F三人中至少有两人参与作案；
 * A、D不可能是同案犯；
 * B、C或同时作案，或与本案无关；
 * C、D中有且仅有一人作案； 
 * 如果D没有参与作案，则E也不可能参与作案。
 * 试编一程序，将作案人找出来。 
 */
namespace ArithmeticDemo
{
    public class SixSuspect
    {
      
        public static void Main()
        {
           String[] persons = { "A", "B", "C", "D", "E", "F" };
            for (int i = 0; i <= 63; i++) 
            { 
                int t = i; 
                int[] num = new int[6]; 
                int j = 5; 
                for (; j >= 0; j--) 
                {
                    // 换成二进制数码，保存在一个6个元素的一维数组中
                    if (t / 2 > 0)
                    { 
                        num[j] = t % 2; 
                        t = t / 2; 
                    } 
                    else 
                    { 
                        num[j] = t;
                        break; 
                    } 
                } 
                // num[0]--num[5]代表A--F 
                if (num[0] + num[1] >= 1)// 代表AB至少有一个人作案 
                {                    
                    if (num[0] + num[4] + num[5] >= 2)  // AEF 至少2个人作案 
                    {                        
                        if (num[0] + num[3] <= 1)  // AD 不是同案犯。但可能都没作案或其中一个作案 
                        {                            
                            if ((num[1] + num[2] == 0 || num[1] + num[2] == 2)) // BC 同时作案，或者同时没作案 
                            {                                 
                                if (num[2] + num[3] == 1)// CD肯定有一个人作案了 
                                {
                                    if (num[3] == 0 && num[4] == 0 || num[3] == 1)  // 如果D没作案且E也没作案，或者 D作案了了
                                    {
                                        for (int index = 0; index < num.Length; index++)
                                        {
                                            if (num[index] == 1)
                                            {
                                                Console.Write(persons[index] + ",");
                                            }
                                        } 
                                    }                                       
                                } 
                            } 
                        } 
                    } 
                } 
            }
            Console.ReadLine();
        }
    }
}