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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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hi in the first test case i have to insert 4 after the element 4 in the list and in the third test case i have to insert 2 before the element 2 in the list.
it is confusing
my brain almost got here.
Wonderful solution