Challenge #30: Alteryx '16 Grand Prix (Race 1, L2)

[DelHansen]

A little slow @ 11:26 or thereabouts... Looks like the same approach as everyone else...

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[aanandkumar]

A fun, quick challenge! Forgot to time myself but I'm pretty sure around 10 mins. 

[dmodest]

Here is my solution:

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[ReconBen]

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[etechman]

Took me a little bit longer than 10 minutes, but I got it done in about 20.  And my flow is almost the same as the answer flow.  

[Steve_B_]

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I didn't see the need to do the last sum from the main data. I just summed the previous group.

I do love using containers.