Thread: non repeating random number generation?

  1. #1
    Registered User
    Join Date
    Feb 2005

    Exclamation non repeating random number generation?

    Any help would be appreciated!
    Im new to C# and im going crazy trying to figure out a simple way to create a 4-digit non-repeating random number for a number guessing game. If anyone can help with the code I already have I would be grateful.

    Heres what I have:

    private void form1_Load(object sender, System.EventArgs e)
    string answer;
    //Creates random number array
    String[] myNumbers={"0","1","2","3","4","5","6","7","8","9"};
    Random rndNumbers=new Random();
    I dont know what kind of loop make from here, and then I dont understand how to put the random number into a string

    Please help

  2. #2
    Registered User
    Join Date
    Jun 2003
    I use something like this for my code i am using in my project -

    Stack numberCheck = new Stack();
    int number = 0;
    Random randomNumber = new Random();
    bool exists = false;
    //generates a number then checks if it has already been made
    number = randomNumber.Next(1,100);
    exists = numberCheck.Contains(number);
    while(exists == true)
    //shrink this code down later by making a function of your own
    //which can also be used above too
    number = randomNumber.Next(1,100);
    exists = numberCheck.Contains(number);
    Should be fairly easy to see where you can change things to suit your needs.

    And use the Convert to change the int to a string ie. -

    string word = Convert.tostring(number);
    He who asks is a fool for five minutes, but he who does not ask remains a fool forever.

    The fool wonders, the wise man asks. - Benjamin Disraeli

    There are no foolish questions and no man becomes a fool until he has stopped asking questions. Charles Steinmetz

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