A young computer scientist and two colleagues show that searches within data structures called hash tables can be much faster than previously deemed possible.

A lookup table that is designed to efficiently store non-contiguous keys (account numbers, part numbers, etc.) that may have wide gaps in their alphabetic or numeric sequences. THIS DEFINITION IS ...

Now, it's time to make Excel count how many of each animal there are in your original table, and this is where using the hash sign makes life a lot easier. To do this, you'll need ...