In order to understand the challenge, I translated the code in your OP (I lack Perl 6) to a scripting language which happens to support given, when, and default. I had a hell of a time getting it to work - then I noticed this little detail in the OP which I had originally misread:

I have included a currently non-working Perl6 solution below.
I say currently because I suspect the problem is with Pugs and not with the code.

So, maybe my time was not wasted.. perhaps if we compare our results, we can determine whether or not it's your algorithm that is to blame.

My translation of your algorithm returned correct results in most cases, but failed the following: 

  actual          detected
ball 2 light   ball 2 heavy
ball 5 light   ball 6 light
ball 6 light   ball 5 light
ball 7 light   ball 8 light
ball 8 light   ball 7 light
ball 1 heavy   ball 5 light
ball 2 heavy   ball 5 light
ball 3 heavy   ball 6 light
ball 9 heavy   ball 10 heavy
ball 10 heavy  ball 9 heavy

[download]
If you're getting the same failures, perhaps the problem is in your algorithm.

In reply to Re: Odd Ball Challenge by djohnston
in thread Odd Ball Challenge by Limbic~Region

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