A Function of N Possible Combinations

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hi, I am making an application but i am stuck in one module,

i simply want to make a Method like

private string Hitter()
{
Some Code
}

which will return all possible combinations of the following

abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890~!@#$%^&*()_+=-`';.,?/<>:"{}|\][

Is it Possible ?, I feel it will be....:~

Please Guide me:confused:

Posted 6-Oct-10 3:05am

nakulkundra

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Kubajzz · Answer 1 · 2010-10-06T08:03:00

It is virtually impossible. Or, in other words, it is possible to write such algorithm, but you have a very slim chance that you (or your grand-grandsons) will still be alive when the algorithm finishes.

You have a set of approximately 100 characters. There are approximately 10^28 50-combinations (10^28 ways to choose 50 items out of 100). No matter how efficient your algorithm is, it will take forever to generate 10^28 items. Not speaking about all 49-combinations, 48-combinations, 47-combinations...

Maybe you meant permutations instead of combinations. Well, if that's the case, then your situation is not any better, since there are about 10^157 permutations... Well, I wish you a lot of patience with that.

#realJSOP · Answer 2 · 2010-10-06T03:18:00

Solution 1

Check this article:

Permutations, Combinations, and Variations using C# Generics[^]

Or google "c# permutations"

Posted 6-Oct-10 3:18am

#realJSOP

NMehta83 · Answer 3 · 2010-10-06T03:21:00

Solution 2

You should use Random class of c# for this.

http://www.c-sharpcorner.com/UploadFile/mahesh/RandomNumber11232005010428AM/RandomNumber.aspx[^]

Please Vote if this helped you then.

Posted 6-Oct-10 3:21am

NMehta83

Comments

nakulkundra 6-Oct-10 9:31am

random function will not ensure all possible combinations in optimal time

Toli Cuturicu 6-Oct-10 14:56pm

Absurd, illogic, worst answer ever. Less then 1 deserved.

Sandeep Mewara 6-Oct-10 15:12pm

How come random function will do?

NMehta83 7-Oct-10 2:22am

Please see the link you will get it. Just need to add more ascii value into that to get exact output.