# Array Combinations
**URL:** https://rubytalk.org/t/array-combinations/47555
**Category:** ruby-talk
**Created:** [7 July 2008 04:13 UTC](https://rubytalk.org/t/array-combinations/47555 "2008-07-07T04:13:30Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Pragash\_Mr](https://rubytalk.org/u/Pragash_Mr)
#### Post date: [7 July 2008 04:13 UTC](https://rubytalk.org/t/array-combinations/47555/1 "2008-07-07T04:13:30Z")
Hi,
I want to find array combinations is there any way find combinations in
array
> **路路路**
>
> --
> Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/).
---
### Author:  [@Mikel\_Lindsaar1](https://rubytalk.org/u/Mikel_Lindsaar1)
#### Post date: [7 July 2008 04:32 UTC](https://rubytalk.org/t/array-combinations/47555/2 "2008-07-07T04:32:27Z")
Yes.
If you want a more detailed answer, it might be a good idea to give an
appropriately detailed question... 馃檪
Best Regards
Mikel
> **路路路**
>
> On Mon, Jul 7, 2008 at 2:13 PM, Pragash Mr. \ wrote:
>
> > I want to find array combinations is there any way find combinations in
> > array
>
> --
>
> > **[Mikel Lindsaar](https://lindsaar.net/)**
> >
> > Internet Home for Mikel Lindsaar
>
> Rails, RSpec and Life blog....
---
### Author:  [@Pragash\_Mr](https://rubytalk.org/u/Pragash_Mr)
#### Post date: [7 July 2008 04:35 UTC](https://rubytalk.org/t/array-combinations/47555/3 "2008-07-07T04:35:02Z")
Mikel Lindsaar wrote:
> **路路路**
>
> > On Mon, Jul 7, 2008 at 2:13 PM, Pragash Mr. \> \ wrote:
> >
> > > I want to find array combinations is there any way find combinations in
> > > array
> >
> > Yes.
> >
> > If you want a more detailed answer, it might be a good idea to give an
> > appropriately detailed question... 馃檪
> >
> > Best Regards
> >
> > Mikel
>
> Hi,
> i am having an array for ex:[1,2,3,4]
>
> from this array i want to find the possible combinations like
> [1,3,4,2]
> [1,4,2,3]
> etc....
>
> --
> Posted via [http://www.ruby-forum.com/\](http://www.ruby-forum.com/%5C).
---
### Author:  [@Martin\_DeMello](https://rubytalk.org/u/Martin_DeMello)
#### Post date: [7 July 2008 04:40 UTC](https://rubytalk.org/t/array-combinations/47555/4 "2008-07-07T04:40:09Z")
[http://permutation.rubyforge.org/](http://permutation.rubyforge.org/)
martin
> **路路路**
>
> On Sun, Jul 6, 2008 at 9:35 PM, Pragash Mr. \ wrote:
>
> > i am having an array for ex:[1,2,3,4]
> >
> > from this array i want to find the possible combinations like
> > [1,3,4,2]
> > [1,4,2,3]
> > etc....
---
### Author:  [@\_Pena\_Botp1](https://rubytalk.org/u/_Pena_Botp1)
#### Post date: [7 July 2008 05:13 UTC](https://rubytalk.org/t/array-combinations/47555/5 "2008-07-07T05:13:12Z")
# i am having an array for ex:[1,2,3,4]
# from this array i want to find the possible combinations like
# [1,3,4,2]
# [1,4,2,3]
# etc....
if you have ruby version 1.8.7 or 1.9, just try it
eg,
> RUBY\_VERSION
=\> "1.8.7"
> [1,2,3].permutation(3){|x| p x}
[1, 2, 3]
[1, 3, 2]
[2, 1, 3]
[2, 3, 1]
[3, 1, 2]
[3, 2, 1]
=\> [1, 2, 3]
> [1,2,3].permutation(2){|x| p x}
[1, 2]
[1, 3]
[2, 1]
[2, 3]
[3, 1]
[3, 2]
=\> [1, 2, 3]
> [1,2,3].combination(3){|x| p x}
[1, 2, 3]
=\> [1, 2, 3]
> [1,2,3].combination(2){|x| p x}
[1, 2]
[1, 3]
[2, 3]
=\> [1, 2, 3]
kind regards -botp
> **路路路**
>
> From: Pragash Mr. [mailto:gananapragasam@srishtisoft.com]