print all possible combination of array ellements(integers).

Posted by Nagarjuna6087 under C# on 8/23/2016 | Points: 10 | Views : 890 | Status : [Member] | Replies : 2

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hi,
i want know how to write this program.

example:
input:1,2,3,4

output:1,2,3,4,
12,13,14,23,24,......................1234

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Posted by: Manideepgoud on: 8/23/2016 [Member] Starter | Points: 25

0	Dear nagarjuna6087 Please follow this url for arrays http://www.dotnetfunda.com/articles/show/2947/arrays-declaration-and-default-initialization-of-arrays-in-csharp Nagarjuna6087, if this helps please login to Mark As Answer. \| Alert Moderator

Posted by: A2H on: 8/23/2016 [Member] [MVP] Silver | Points: 25

0	You are trying to populate Powerset of an array, if so then you can try with the below code public static IEnumerable<IEnumerable<T>> GetPowerSet<T>(IEnumerable<T> input) { var seed = new List<IEnumerable<T>>() { Enumerable.Empty<T>()} as IEnumerable<IEnumerable<T>>; return input.Aggregate(seed, (a, b) => a.Concat(a.Select(x => x.Concat(new List<T>() { b } )))); } Ensure that you added necessary references to your page before using this logic. Source UK : http://rosettacode.org/wiki/Power_set#C.23 Thanks, A2H My Blog Nagarjuna6087, if this helps please login to Mark As Answer. \| Alert Moderator

You are trying to populate Powerset of an array, if so then you can try with the below code

public static IEnumerable<IEnumerable<T>> GetPowerSet<T>(IEnumerable<T> input)
	{
		var seed = new List<IEnumerable<T>>()
		{
		Enumerable.Empty<T>()}

		as IEnumerable<IEnumerable<T>>;
		return input.Aggregate(seed, (a, b) => a.Concat(a.Select(x => x.Concat(new List<T>()
		{
		b
		}

		))));
	}

Ensure that you added necessary references to your page before using this logic.

Source UK :

 http://rosettacode.org/wiki/Power_set#C.23

Thanks,
A2H
My Blog

Nagarjuna6087, if this helps please login to Mark As Answer. | Alert Moderator

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