Store UITableViewController Section Array

Hi all, i have SQLite table where my records stays as:

Code:

Antenna
Apple
April
Buffalo
Ship
Pill
..

To be able to display them on sectioned UITableViewController, i query the first letters from these records and create an array with them. Then for each letter in the array, i again query table and get each records starting with that letter. I guess you got the idea.

Since i do these operations in the app, it takes quite time (3-4 seconds) and app pauses in those seconds. I was curious if i can create those arrays and store somehow in the system. I can re-create them when i update the data time to time.

Thanks a lot in advance..