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Sorting mutable array in ascending order in Objective-C

David Miller 2462 07 Dec 2015

I have created a studentDB table in a SQLite database and storing the data of studentDB in an NSMutableArray.
I have created attributes in our studentDB main attributs are as follows: Student_Name, Registration_No, Date_of_Join.

Now, I want to sort this mutable array according to Student_Name in ascending order in a Table View.

So, how can I do this. any help would be appreciated.

iphone iphoneiosobjective c
Updated 08 Dec 2015
David Miller
David Miller

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1 Answers

Tarun Kumar
Tarun Kumar 08 Dec 2015 Accepted Answer
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For sorting arrays use NSSortDescriptor's method sortUsingDescriptors:sortDescriptors to sort a mutable array.
for Ex:

NSSortDescriptor *descriptor = [[NSSortDescriptor alloc]
                                initWithKey:@"Date_Of_Join" ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObject:descriptor];
[array sortUsingDescriptors:sortDescriptors];
[descriptor release];

We can sort using different methods:
- (NSArray *)sortedArrayUsingFunction:(NSInteger (*)(id, id, void *))comparator context:(void *)context
- (NSArray *)sortedArrayUsingSelector:(SEL)comparator
- (NSArray *)sortedArrayUsingComparator:(NSComparator)cmptr
- (NSArray *)sortedArrayWithOptions:(NSSortOptions)opts usingComparator:(NSComparator)cmptr

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