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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Code for "Sum Strings as Numbers" passed tests for this kata.
https://www.codewars.com/kata/5324945e2ece5e1f32000370
Hi, I started to suspect something wrong when I looked at the example. It really doesn't work like the other katas. Thank you very much for the explanations!