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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.
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As I know, length is for string, but is a vector, that means dinamic array of strings. I used names.size()
I used a Date object to convert the number of minutes to a properly formatted time string.
The Date constructor takes the number of milliseconds since the start of the epoch, see: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/Date#Parameters
Minutes to milliseconds conversion