3 Replies Latest reply on Aug 11, 2008 7:36 AM by 791266

random number possiblies

Random number possibilites
Eg: input we given

2
3
4

The Output will be
234
243
324
342
423
432
this is output.
The possiblities will come how many input numbers u r enter that
Ex: u entered 3 digits that factorial is 6
u entered 4 digits that factorial is 24 possiblilites will come
This is the Problem i am faceing
• 1. Re: random number possiblies
Permutation and Combination is the way to go if you don't want to brute force it.

[http://tutors4you.com/permutationcombinationtutorial.htm]

Well, if you want to brute force it (you will have to brute force it for the output you want), an ugly loop will do.

As for factorials, you can probably use any loop. Personally, I like to make a recursive method. Something like this:
public static long factorial(int num) {
return num == 0 ? 1 : num * factorial(num - 1);
}
Here is also a very very important article to read:

[http://www.catb.org/~esr/faqs/smart-questions.html]

I cannot stress how much you need to read it. Just read it and read every single word of it. You will be enlightened, I promise. :)

Have fun.
• 2. Re: random number possiblies
Multiposted all over the place!
• 3. Re: random number possiblies
@Op. I have removed your cross-posts, so this is the only thread that is left. Please don't cross-post in the future.

Kaj