برنامج تشفير zigzag بالجافا .ممكن المساعده

/// <summary>
/// method for demonstrating the ZigZag Cipher 
/// (Also known as the Rail Fence Cipher)
/// </summary>
/// <param name="str">string we wish to apply the cipher to</param>
/// <returns>the ciphered string</returns>
import java.utl.*;
public class ZigZagCipher
{
 public static void main(String args[])
{
    //create zip & zag (we're only using
    //2 rails so this represents top and bottom rails)
    string zig = "";
    string zag = "";

    //convert the input string to a char array
    char[] chrArray = str.ToCharArray();

    //this lets us know if we're dealing with the
    //top or bottom rail
    bool isTopRow = true;

    //loop through the char array
    for ( c in chrArray)
    {
        //if we're dealing with the top rail add
        //current char to zig
        if (isTopRow == true)
            zig += c.ToString();
        else
            //otherwise add to zag
            zag += c.ToString();

        //change status
        isTopRow = !isTopRow;
    };

    //concantenate the 2 and return
    return zig + zag;
}

/// <summary>
/// method for undoing the zigzag cipher
/// </summary>
/// <param name="str">the string we're working with</param>
/// <returns>the converted string</returns>
public static string DecipherZigZag(string str)
{
    //create zig & zag which both hold 1/2 the original string
    string zig = str.Substring(0, str.Length / 2);
    string zag = str.Substring(str.Length / 2);

    //top & bottom counter to hold our position
    int top = 0;
    int bottom = 0;

    //hold the deciphered string
    string decyphered = "";
    bool isTopRow = true;

    //loop through the string, making sure we havent gone too far
    while (decyphered.Length != str.Length)
    {
        //if we're dealing with the top rail then add to
        //deciphered from the zig char array
        if (isTopRow == true)
        {
            decyphered += zig.Substring(top, 1);
            top++;
        }
        else
        {
            //otherwise add from the zag char array
            decyphered += zag.Substring(bottom, 1);
            bottom++;
        }
        isTopRow = !isTopRow;
    }
    return decyphered;
}
}

//convert the input string to a char array
    char[] chrArray = str.ToCharArray();

    //this lets us know if we're dealing with the
    //top or bottom rail
    bool isTopRow = true;

    //loop through the char array
    foreach (char c in chrArray)
    {
        //if we're dealing with the top rail add
        //current char to zig
        if (isTopRow == true)
            zig += c.ToString();
        else
            //otherwise add to zag
            zag += c.ToString();

        //change status
        isTopRow = !isTopRow;
    }

    //concantenate the 2 and return
    return zig + zag;
}

/// <summary>
/// method for demonstrating the ZigZag Cipher 
/// (Also known as the Rail Fence Cipher)
/// </summary>
/// <param name="str">string we wish to apply the cipher to</param>
/// <returns>the ciphered string</returns>
import java.utl.*;
public class ZigZagCipher
{
 public static void main(String args[])
{
    //create zip & zag (we're only using
    //2 rails so this represents top and bottom rails)
    string zig = "";
    string zag = "";

    //convert the input string to a char array
    char[] chrArray = str.ToCharArray();

    //this lets us know if we're dealing with the
    //top or bottom rail
    bool isTopRow = true;

    //loop through the char array
    foreach (char c in chrArray)
    {
        //if we're dealing with the top rail add
        //current char to zig
        if (isTopRow == true)
            zig += c.ToString();
        else
            //otherwise add to zag
            zag += c.ToString();

        //change status
        isTopRow = !isTopRow;
    }

    //concantenate the 2 and return
    return zig + zag;
}

/// <summary>
/// method for undoing the zigzag cipher
/// </summary>
/// <param name="str">the string we're working with</param>
/// <returns>the converted string</returns>
public static string DecipherZigZag(string str)
{
    //create zig & zag which both hold 1/2 the original string
    string zig = str.Substring(0, str.Length / 2);
    string zag = str.Substring(str.Length / 2);

    //top & bottom counter to hold our position
    int top = 0;
    int bottom = 0;

    //hold the deciphered string
    string decyphered = "";
    bool isTopRow = true;

    //loop through the string, making sure we havent gone too far
    while (decyphered.Length != str.Length)
    {
        //if we're dealing with the top rail then add to
        //deciphered from the zig char array
        if (isTopRow == true)
        {
            decyphered += zig.Substring(top, 1);
            top++;
        }
        else
        {
            //otherwise add from the zag char array
            decyphered += zag.Substring(bottom, 1);
            bottom++;
        }
        isTopRow = !isTopRow;
    }
    return decyphered;
}
}

السلام عليكم ورحمه الله وبركاته

اسعد الله مساكم ,,

كيف الحال ؟؟ انا قد كتبت موضوع لبرنامج تشفير ولكن للاسف خطا ومارضي يشتغل معي واشكر كل من حاول مساعدتي

وبالاخص mental-driller فهو نبراس هذا المنتدى .

وبعد البحث ووجدت هذا الكود ولما شغلته طلع فيه 22 خطا وعدلته وبعد التعديل صار فيه 4 اخطاء ماعرفتها اتمنى تساعدوني فيه للضروره

وجزاء الله خير كل من حاول وساعدني في هذا البرنامج.

والخطا الي طلع عندي بعد التشغيل هو موجود بالكود لحاله ماعرف المشكله بالتعريف او loop

*قمت ببعض التعديل واصبح عندي خطائين لااعرف ماالسبب