DaniWeb Forum Index > Software Development > C#

Same numbers in randomized array

Please support our C# advertiser: Programming Forums - DaniWeb Sister Site

Thread Solved

•

Join Date: Jan 2009

Posts: 3

Reputation: kaczmar86 is an unknown quantity at this point

Solved Threads: 0

kaczmar86

Offline

Newbie Poster

Same numbers in randomized array

Jan 14th, 2009

I have function which randomizes numbers:

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
public int losuj()
{
    Random losowanie = new Random();
    int los = losowanie.Next(0, 9);
    return los;
}
public int losuj()
{
    Random losowanie = new Random();
    int los = losowanie.Next(0, 9);
    return los;
}

I want to fill array with numbers generated by losuj function, so I wrote:

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
for (int i = 0; i < 9; i++)
    for (int j = 0; j < 9; j++)
        planszaTab[i, j] = losuj();
for (int i = 0; i < 9; i++)
    for (int j = 0; j < 9; j++)
        planszaTab[i, j] = losuj();

Instead of array with random numbers all I get is array fill with the same number ex. 3. Each time I run program I get different number in which array is filled.

What I do wrong?

Last edited by kaczmar86; Jan 14th, 2009 at 6:24 am.

•

Join Date: Aug 2008

Posts: 1,735

Reputation: LizR has a spectacular aura about

Solved Threads: 186

LizR

Offline

Posting Virtuoso

Re: Same numbers in randomized array

Jan 14th, 2009

Because its happening so fast the seed is the same for all.
move the

 Help with Code Tags 
 C# Syntax (Toggle Plain Text) 
Random losowanie = new Random();
Random losowanie = new Random();

to outside the function so its not recreated each time, so its a private variable to your class. You should get different numbers then.

Did I just hear "You gotta help us, Doc. We've tried nothin' and we're all out of ideas" ? Is this you? Dont let this be you! I will put in as much effort as you seem to.

•

Join Date: Oct 2008

Posts: 2,054

Reputation: ddanbe has much to be proud of

Solved Threads: 311

ddanbe

Offline

Postaholic

Re: Same numbers in randomized array

Jan 14th, 2009

You want random numbers in the range from 0 to 9. Which is 10 possible outcomes.
The array in the for loops goes from 0 to 8, which is 9 places.
If that is what you want, OK with me. But I like to mention it anyway.

Today is a gift, that's why it is called "The Present".
Make love, no war. Cave ab homine unius libri.
Danny