sorting mutable array in alphabetical order

Question

I am having a nsmutable array and in that nearly 50 -60 object having different names ,and can i sort this array in alphabetical order (Is it possible, How?)

score 14 · Accepted Answer · answered Sep 15 '10 at 17:29

14

For a simple sort like this, I like to use sort descriptors.

Suppose you have an mutable array of objects whose class has a name NSString property:

NSSortDescriptor *sort=[NSSortDescriptor sortDescriptorWithKey:@"name" ascending:NO];
[myArray sortUsingDescriptors:[NSArray arrayWithObject:sort]];

answered Sep 15 '10 at 17:29

TechZen

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This will start with "W" and not with "A". How to start with "A"? – Jonathan Gurebo Aug 16 '13 at 20:20
I got ascending order first CAPS and small letters. Like "A to Z" and then "a to z". What I need to do. – Mathi Arasan Aug 11 '15 at 06:24

Jacob Relkin · Answer 2 · 2010-09-15T17:26:12.960

8

Absolutely, you can use sortUsingSelector: for this:

[myArray sortUsingSelector:@selector(compare:)];

If your array has custom objects, then you will need to implement a sorting method on those objects:

@implementation myCustomObject
  ...

  -(NSComparisonResult) compare:(myCustomObject*) other {
      return [self.name compare:other.name];
  }

@end

edited Sep 15 '10 at 17:26

answered Sep 15 '10 at 17:19

Jacob Relkin

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nice one line answer (for simple arrays). – newenglander Jun 02 '12 at 10:48

score 2 · Answer 3 · answered Sep 15 '10 at 17:35

TechZen's approach works well, but it would work better if you used NSSortDescriptor's +sortDescriptorWithKey:ascending:selector:, passing "localizedCompare:" as the selector. This way, the sorting is localized to the user's language, which can make a big difference in string comparison.

score 0 · Answer 4 · answered Sep 14 '13 at 16:00

0

myArray=[myDict keysSortedByValueUsingSelector:@selector(compare:)];

Simply Worked for me!

answered Sep 14 '13 at 16:00

royemi

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hmm .. what's the difference to earlier answers? – kleopatra Sep 14 '13 at 16:22

sorting mutable array in alphabetical order

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