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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.
For each iteration of the string using
map, the callback executesindexOfwhich will iterate over the entire string again. This makes the solution O(n^2). If you know the strings won't ever be that long, then it's fine to optimize for readability. But, if you don't know, at least consider performance.For each iteration of the string using
map, the callback executesindexOfwhich will iterate over the entire string again. This makes the solution O(n^2). If you know the strings won't ever be that long, then it's fine to optimize for readability. But, if you don't know, at least consider performance.