How do I Re-Alphabetize my Contacts?

[AC Question]

How to Re-Alphabetize my Contacts

I have a Samsung Galaxy Note 3. Somewhere along the way, my contacts separated. Now I'll have an the last 1 of 2 "A" listings at the beginning of the "B" listings, etc. Is there an easy way to get the listings back under their correct alphabetical letter? Thanks!