该怎么实现这个，运行总是失败，指针该在哪里运行？要下特别的软件吗?c，c#，c++

using System.Collections.Generic;
using System.IO;
using System.Reflection;
using System.Text;
using System;
namespace HelloWorldApplication
{
    class HelloWorld
    {
    
    private static unsafe uint[] ToUInt32Array(byte[] data, bool includeLength)
    {
        uint[] numArray;
        int length = data.Length;
        int index = ((length & 3) != 0) ? ((length >> 2) + 1) : (length >> 2);
        if (!includeLength)
        {
            numArray = new uint[index];
        }
        else
        {
            numArray = new uint[index + 1];
            numArray[index] = (uint) length;
        }
        for (int i = 0; i < length; i++)
        {
            uint* numPtr1 = &(numArray[i >> 2]);
            numPtr1[0] |= (uint) (data[i] << (((i & 3) << 3) & 0x1f));
        }
        return numArray;
    }
    
    private static byte[] ToByteArray(uint[] data, bool includeLength)
    {
        int num = data.Length << 2;
        if (includeLength)
        {
            int num2 = (int) data[data.Length - 1];
            num -= 4;
            if ((num2 < (num - 3)) || (num2 > num))
            {
                return null;
            }
            num = num2;
        }
        byte[] buffer = new byte[num];
        for (int i = 0; i < num; i++)
        {
            buffer[i] = (byte) (data[i >> 2] >> (((i & 3) << 3) & 0x1f));
        }
        return buffer;
    }
    
        private static uint[] Decrypt(uint[] v, uint[] k)
    {
        int n = v.Length - 1;
        if (n < 1)
        {
            return v;
        }
        if (k.Length < 4)
        {
            uint[] Key = new uint[4];
            k.CopyTo(Key, 0);
            k = Key;
        }
        uint z = v[n], y = v[0], delta = 0x9E3779B9, sum, e;
        int p, q = 6 + 52 / (n + 1);
        sum = unchecked((uint)(q * delta));
        while (sum != 0)
        {
            e = sum >> 2 & 3;
            for (p = n; p > 0; p--)
            {
                z = v[p - 1];
                y = unchecked(v[p] -= (z >> 5 ^ y << 2) + (y >> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z));
            }
            z = v[n];
            y = unchecked(v[0] -= (z >> 5 ^ y << 2) + (y >> 3 ^ z << 4) ^ (sum ^ y) + (k[p & 3 ^ e] ^ z));
            sum = unchecked(sum - delta);
        }
        return v;
    }
        static void Main(string[] args)
        {
            /* 我的第一个 C# 程序*/
            String aaa = "字符串1";
            Console.WriteLine(aaa);
            byte[] buffer = Encoding.UTF8.GetBytes(aaa);
            foreach(var item in buffer)
            {
                Console.Write(item + " ");
            }
            Console.WriteLine("\n换行");
            byte[] bbb = Encoding.UTF8.GetBytes("字符串2");
            foreach(var item in bbb)
            {
                Console.Write(item + " ");
            }
            Console.WriteLine("\n换行");
            
            byte[] outBuffer=Decrypt( buffer , bbb);
            foreach (var item in outBuffer)
            {
                Console.Write(item + " ");
            }
    
            String la=Encoding.UTF8.GetString(outBuffer);
            Console.WriteLine(la);
            Console.WriteLine("Hello World!");
            Console.ReadKey();
        }
    }
}

java程序，哪来的指针？