I like your code but would suggest that the output is perhaps incorrect. Surely the two ranges 0-2,2.5-4.5 are a single logical range 0-4.5??? The range concept becomes a bit iffy once you stop using integers. Any two numbers will constitute a range - it just depends on your step size. Using my definition that a range means that any two adjacent numbers within that range are no more than unity apart....the range should be 0-4.5 not the 0-2,2.5-4.5...

Anyway, did somebody say GOLF? A bloated 93 chars, surely well over par.

cheers

tachyon 

@test =(1,2,2.5,3.5,4.5,7,6,-5,-6,-7,7,8,9,10,0,12,18);


sub range {
   @_=sort{$a<=>$b}@_;@r=($l)=$_[0];
   map{if(abs$l-$_>1){push@r,$r=$_;
   $r[-2].="~$l";}$l=$_;}@_;@r;
}

@result = range(@test);
print "$_\n" for @result;


Prints:
-7~-5
0~4.5
6~10
12~12
18

[download]

In reply to Re: Critique yet another List-to-Range function by tachyon
in thread Critique yet another List-to-Range function by scott

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