NSArray of NSStrings. Sort by relevance. Best practice

Question

I have a NSArray of NSStrings.

For example: @"Good item", @"Very good item", @"The best of the best item"

Upon searching on UITextField, the user types @"Very good item". I need to sort the source array by relevance and would like to see result as:

@"Very good item" <- the best match with the search phrase
@"Good item"
@"The best of the best item"

Please suggest me the best way to do it in Objective-C.

Thanks.

You need to define "relevance" with a degree in it. – Larme Dec 21 '16 at 08:59 — Larme, Dec 21 '16 at 08:59

score 0 · Accepted Answer · answered Dec 21 '16 at 08:49

You write a method (maybe in an NSString category) that compares two strings and returns a number describing their similarity, using an algorithm that you need to design. A simple algorithm would be splitting each string into words, and counting the number of words the strings have in common.

Sorting is then trivial.

NSArray of NSStrings. Sort by relevance. Best practice

1 Answers1