# Advice - Printing All Options **URL:** \ **Category:** Ruby\ **Created:** [December 2, 2009, 2:52pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714 "2009-12-02T14:52:10Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 2:52pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/1 "2009-12-02T14:52:10Z")
Hi! I’ve set a project for myself but I don’t know where to begin (newbie). Here’s what I’m trying to do: I’m trying to come up with a drill for my martial arts class where I can flow from position to position, from top to bottom, and to left and right. Here’s an example: Position 1/being on Top of opponent/Focus on Left Side. Then go to, say, Position 2/being on Bottom of Opponent/Focus on Right Side. In other words, I’d like a list of all different combinations for these 3 areas (Position/Top-Bottom/Left-Right). I’ve played around with rand with arrays but can’t get what I’m looking for. Thanks so much! ---
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 3:17pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/2 "2009-12-02T15:17:30Z")
On Wed, Dec 2, 2009 at 1:52 PM, Wood Y. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > Thanks so much! > a = [1,2,3] > b = [“a”,“b”,“c”] > c = [7,8,9] a.each {|x| b.each {|y| c.each {|z| puts “#{x}/#{y}/#{z}”}}} There’s probably a better way. > – > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). – Paul S. [http://www.nomadicfun.co.uk](http://www.nomadicfun.co.uk) removed\_email\_address@domain.invalid ---
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 3:25pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/3 "2009-12-02T15:25:54Z")
> a = [1,2,3] > b = [“a”,“b”,“c”] > c = [7,8,9] > > a.each {|x| b.each {|y| c.each {|z| puts “#{x}/#{y}/#{z}”}}} > > There’s probably a better way. > – > Paul S. > [http://www.nomadicfun.co.uk](http://www.nomadicfun.co.uk) > > removed\_email\_address@domain.invalid PERFECT!! You totally nailed it! That’s exactly what I wanted. Woo hoo! I’ll study the code and learn from this. Thanks SO much! Here’s what I did: Positions = [‘Rear’, ‘Mount’, ‘Knee’, ‘Side’, ‘Turtle’, ‘Guard’] Direction = [‘Top’, ‘Bottom’] Side = [‘Left’, ‘Right’] Positions.each {|x| Direction.each {|y| Side.each {|z| puts “#{x}/#{y}/#{z}”}}} ---
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 3:30pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/4 "2009-12-02T15:30:42Z")
Hey - one more thing. How can I go further and make this more random. I ran the program and got this: Rear/Top/Left Rear/Top/Right Rear/Bottom/Left Rear/Bottom/Right Mount/Top/Left Mount/Top/Right Mount/Bottom/Left Mount/Bottom/Right Knee/Top/Left Knee/Top/Right Knee/Bottom/Left Knee/Bottom/Right Side/Top/Left Side/Top/Right Side/Bottom/Left Side/Bottom/Right Turtle/Top/Left Turtle/Top/Right Turtle/Bottom/Left Turtle/Bottom/Right Guard/Top/Left Guard/Top/Right Guard/Bottom/Left Guard/Bottom/Right Can I drill down even further? Example - Guard/Bottom/Right, then Turtle/Top/Right, etc? Thanks! ---
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 3:35pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/5 "2009-12-02T15:35:30Z")
Wood Y. wrote: > Hey - one more thing. How can I go further and make this more random. I > ran the program and got this: > > Rear/Top/Left > Rear/Top/Right > Rear/Bottom/Left > Rear/Bottom/Right > Mount/Top/Left > Mount/Top/Right > Mount/Bottom/Left > Mount/Bottom/Right > Knee/Top/Left > Knee/Top/Right > Knee/Bottom/Left > Knee/Bottom/Right > Side/Top/Left > Side/Top/Right > Side/Bottom/Left > Side/Bottom/Right > Turtle/Top/Left > Turtle/Top/Right > Turtle/Bottom/Left > Turtle/Bottom/Right > Guard/Top/Left > Guard/Top/Right > Guard/Bottom/Left > Guard/Bottom/Right > > Can I drill down even further? What do you mean? > Example - Guard/Bottom/Right, then > Turtle/Top/Right, etc? Thanks! If you just want random order, that’s easy. Check out sort\_by and rand. Best, – Marnen Laibow-Koser [http://www.marnen.org](http://www.marnen.org) removed\_email\_address@domain.invalid ---
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 3:47pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/6 "2009-12-02T15:47:19Z")
> What do you mean? When I ran my program, it printed out all options for each Position. Now, I’d like to print them out in random order. For example: Mount/Top/Left Knee/Top/Right Side/Bottom/Left etc, instead of Mount/Top/Left Mount/Top/Right Mount/Bottom/Left Mount/Bottom/Right Knee/Top/Left Knee/Top/Right Knee/Bottom/Left Knee/Bottom/Right etc, Thanks! ---
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 3:46pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/7 "2009-12-02T15:46:11Z")
2009/12/2 Marnen Laibow-Koser [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid): > > Mount/Bottom/Left > > Turtle/Top/Right > > What do you mean? > > > Example - Guard/Bottom/Right, then > > Turtle/Top/Right, etc? Thanks! > > If you just want random order, that’s easy. Check out sort\_by and rand. 1.9 also has #shuffle. Cheers robert ---
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 4:18pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/8 "2009-12-02T16:18:23Z")
On Wed, Dec 2, 2009 at 3:13 PM, Aldric G. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote: > > played around with rand with arrays but can’t get what I’m looking for. > > Thanks so much! > > This is, as others have shown, rather trivial code. While I applaud your > intent, which I presume is to not leave out any positions, your training > will benefit from you doing this work in your head and with your body > from the start. But, still, to achieve it, change the “puts” line, which prints to screen, to instead put the result in an array. cobinations = [] Positions = [‘Rear’, ‘Mount’, ‘Knee’, ‘Side’, ‘Turtle’, ‘Guard’] Direction = [‘Top’, ‘Bottom’] Side = [‘Left’, ‘Right’] Positions.each {|x| Direction.each {|y| Side.each {|z| combinations \<\< [#{x}/#{y}/#{z}]}}} puts combinations.shuffle puts combinations.shuffle puts combinations.shuffle 🙂 > – > Posted via [http://www.ruby-forum.com/](http://www.ruby-forum.com/). – Paul S. [http://www.nomadicfun.co.uk](http://www.nomadicfun.co.uk) removed\_email\_address@domain.invalid ---
**Author:** ![woodyee](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/w/43a26b/32.png) [@woodyee](https://www.ruby-forum.com/u/woodyee)\ **Post date:** [December 2, 2009, 4:13pm UTC](https://www.ruby-forum.com/t/advice-printing-all-options/179714/9 "2009-12-02T16:13:31Z")
Wood Y. wrote: > Hi! I’ve set a project for myself but I don’t know where to begin > (newbie). Here’s what I’m trying to do: > > I’m trying to come up with a drill for my martial arts class where I can > flow from position to position, from top to bottom, and to left and > right. Here’s an example: Position 1/being on Top of opponent/Focus on > Left Side. Then go to, say, Position 2/being on Bottom of Opponent/Focus > on Right Side. In other words, I’d like a list of all different > combinations for these 3 areas (Position/Top-Bottom/Left-Right). I’ve > played around with rand with arrays but can’t get what I’m looking for. > Thanks so much! This is, as others have shown, rather trivial code. While I applaud your intent, which I presume is to not leave out any positions, your training will benefit from you doing this work in your head and with your body from the start.