Loading collection data...
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.
This solution is slow, but the time complexity is still O(n).
This is because the length of the alphabet is a constant 26, so it would be O(26n) which is still O(n).
True, but O(4N) == O(N), so it's still linear (although inefficient).
This comment is hidden because it contains spoiler information about the solution