George Ogata wrote:
> Hal Fulton <hal9000 / hypermetrics.com> writes:
> 
> 
>>Here's a problem my tired brain is having trouble with.
>>
>>Given a sorted array of integers, convert them into as many
>>ranges as possible (ranges of three or more).
>>
>>Example:
>>[1,2,3,4,6,7,8,11,12,15,16,17] ==> [1..4,6..8,11,12,15..17]
> 
> 
> Interesting one to golf with:
> 
> a.each_index{|i|a[i..j=i+2]==[x=a[i],x+1,x+2]and(0while a[j]+1==a[j+=1];a[i..j-=1]=a[i]..a[j])}

Ha, interesting indeed, but I don't do golf.  :)

Thanks to all who replied.


Hal