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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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From my solution on Leet Code
Yes, [0] * 10 means exactly that. You can also initialize with empty_list = [None] * 10
They are I just did it. Did you read the description that you do not change the order of customers' list?
For those postceeds me:
"The order of the queue NEVER changes, and"