Problem_4___Encrypted_matrix

gistfile1.txt

using System;
using System.IO;

namespace Problem_4___Encrypted_matrix
{
    class Program
    {
        static void Main(string[] args)
        {
            Stream inStream = Console.OpenStandardInput(1000);
            Console.SetIn(new StreamReader(inStream, Console.InputEncoding, false, 1000));

            string message = Console.ReadLine();
            char diagonal = char.Parse(Console.ReadLine());
            char backSlash = '\\';
            string convertMsg = ConvertMessage(message);
            string encryptedMessage = Encrypt(convertMsg);

            if (diagonal == backSlash)
            {
                PrintMainDiagonal(encryptedMessage);
            }
            else
            {
                PrintAntiDiagonal(encryptedMessage);
            }                
        }

        private static void PrintAntiDiagonal(string encryptedMessage)
        {
            for (int col = encryptedMessage.Length - 1; col > -1; col--)
            {
                for (int row = 0; row < encryptedMessage.Length; row++)
                {
                    Console.Write(row == col ? encryptedMessage[row] : '0');
                    Console.Write(' ');
                }

                Console.WriteLine();
            }
        }

        private static void PrintMainDiagonal(string encryptedMessage)
        {
            for (int row = 0; row < encryptedMessage.Length; row++)
            {
                for (int col = 0; col < encryptedMessage.Length; col++)
                {
                    Console.Write(row == col ? encryptedMessage[col] : '0');
                    Console.Write(' ');
                }

                Console.WriteLine();
            }
        }

        private static string Encrypt(string word)
        {
            string text = "";

            for (int i = 0; i < word.Length; i++)
            {
                int num = word[i] - 48;

                if ((num & 1) == 1)
                {
                    int left = (i - 1) > -1 ?
                                word[i - 1] - 48 : 0;
                    int right = (i + 1) < word.Length ?
                                word[i + 1] - 48 : 0;
                    int sum = left + right + num;
                    text = text + sum;
                }
                else
                {
                    text = text + (num * num);
                }
            }

            return text;
        }

        private static string ConvertMessage(string word)
        {
            string number = "";

            for (int i = 0; i < word.Length; i++)
            {
                int num = word[i] % 10;
                number = number + num;
            }

            return number;
        }
    }
}