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 has a run time of O(n). Since the run time of a sorting algorithm is usually O(nlogn), and you'd still have to iterate through your array once more to count the number of times the integer appears, this solution would be faster.