From: Lloyd Linklater <lloyd@2live4.com>
Date: 2008-09-04T22:21:52+09:00
Subject: Re: String Combine problem

Richard Zenn wrote:

> Here is an array s = ["aaa", "b", "c", "d", "ee", "f"]
> I want to combine them with some rules
> 
> 1.
> s[i].size > s[i+1].size
> combine them
> 2.
> s[i+1].size > s[i].size
> combine them
> 3.
> s[i].size + s[i+1].size
> 
> The upper result is
> 
> {"aaab"}
> {"bc"}
> {"bcd"}
> {"cd"}
> {"dee"}
> {"eef"}

In the first place, it seems that rules 1 and 2 combine to just say that 
they should not be equal in size.

In the second place, if I read the rules correctly, they say that the 
result you want is not correct.

Note:  I am assuming that rule 3 is not a rule as much as it is an 
example of how they should be combined.

s = ["aaa", "b", "c", "d", "ee", "f"]
arr = Array.new
0.upto(s.length - 2) { |i|
  arr << s[i] + s[i+1] unless s[i].size == s[i+1].size
}
p arr

=> ["aaab", "dee", "eef"]

"b", "c", "d" are all the same size and would be excluded by the rules. 
Could you clarify?  I must be missing something.
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