From: Kero <kero@...>
Date: 2005-01-15T19:41:10+09:00
Subject: Re: [SUMMARY] LCD Numbers (#14)

> There were three main strategies used for solving the problem.  Some used a
> template approach, where you have some kind of text representation of your
> number at a scale of one.  Two might look like this, for example:
> 
> 	[ " - ",
> 	  "  |",
> 	  " - ",
> 	  "|  ",
> 	  " - " ]
[snip]
> The second strategy used was to treat each digit as a series of segments that
> can be "on" or "off".  The numbers easily break down into seven positions:
> 
> 	 6
> 	5 4
> 	 3
> 	2 1
> 	 0
> 
> Using that map, we can convert the two above to a binary digit, and some did:
> 
> 	0b1011101
[snip]

So why not use:

LCD = [
  "-|| ||-",  # 0
  "  |  | ",
  "- |-| -",
  "- |- |-",
  " ||- | ",
  "-| - |-",  # 5
  "-| -||-",
  "-||  | ",
  "-||-||-",
  "-||- |-",
]

catching the bits and the shapes at the same time.

[snip]
> The third strategy caught my eye, so I'll examine it here.  Let's look
> at the primary class of Dale Martenson's solution:
> 
> 	class LCD
> 	   attr_accessor( :size, :spacing )
> 	
> 	   #
> 	   # This hash is used to define the segment display for the # given
> 	   digit. Each entry in the array is associated with # the following
> 	   states:
> 	   #
> 	   #    HORIZONTAL
> 	   #    VERTICAL
> 	   #    HORIZONTAL
> 	   #    VERTICAL
> 	   #    HORIZONTAL
> 	   #    DONE

My main program looked like

hor(0)
ver(1, 2)
hor(3)
ver(4, 5)
hor(6)

replacing the statemachine.
 
Ah well. This was actually the first Ruby Quiz I made.
Partially because it looked like it was really short to work out.
Thanks!

(perhaps next time I'll even submit it :)

+--- Kero ----------------------- kero@chello.nl ---+
|  all the meaningless and empty words I spoke      |
|                      Promises -- The Cranberries  |
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