how to check if an array is sorted?
I am sorting using sort descriptors. Is there any API to check if an array is already in sorted order in Swift/Objective-C.
Thanks
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2Sort the array and see if the result is the same. Or just sort it - now you know it's sorted.matt– matt2015-08-03 20:50:20 +00:00Commented Aug 3, 2015 at 20:50
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2Or even better — don't use sort descriptors. Sort the Swift way instead.matt– matt2015-08-03 21:01:47 +00:00Commented Aug 3, 2015 at 21:01
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matt, just curious: what's the Swift way?OFRBG– OFRBG2015-08-03 21:14:56 +00:00Commented Aug 3, 2015 at 21:14
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1Using a closure with sort, I'd assumeoisdk– oisdk2015-08-03 21:21:20 +00:00Commented Aug 3, 2015 at 21:21
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2 Answers
i think there is no frame work, simply iterate truth the array, and check if the current element greater or equal (or less or equal, or which kind of sorting you look for) is. This is the easiest way. Look please at this Question Solution
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As far as I know, there isn't a built in way to check if an array is already sort descriptors. The best way to check is to iterate through the array and check if each element should come before the element precedes it (using whatever definition of "should come before" you want for your sort). If you're sorting custom objects, you can write some sort of compareTo method that compares two objects of your class, which will make it convenient to check using the method I described.
