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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.
Good solution for understanding! I did the same one :)
Good solution! I've made addition variable for sum of elements and forgot about access to new list :)
Use spoiler flag next time, please.
Good job! My solution is similar:
def int32_to_ip(int32):
return '.'.join([str(int32 >> 8*(3-i) & 0xFF) for i in range(4)])