How to sort an array in alphabetical order

Question

I have 2 NSMutableArray array. First array is storing UserID and second array is storing related UserName. Here is dummy structure of arrays.

First array= {"1","5","2","8"}; Second array={"Akash", "Martin", "Hui", "Ajay"};

I want to sort Second in alphabetical order but respected UserID also should be sort.

Why not have an array of structures? – Karl Knechtel Jul 25 '11 at 07:22 — Karl Knechtel, Jul 25 '11 at 07:22

score 3 · Accepted Answer · answered Jul 25 '11 at 07:23

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You should use NSDictionary for this task. Your sorting process will be easier then. You can use key value pair mechanism of NSDictionary like key is ID and value is name.

answered Jul 25 '11 at 07:23

Rahul Vyas

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@Rahul, I made a NSDictionary array with key(userID) and values (UserName) and how to sort this dictionary? – Ajay_Kumar Jul 25 '11 at 07:33
@Ajay_kumar read this so post http://stackoverflow.com/questions/2696354/how-can-i-sort-an-nsdictionary – Rahul Vyas Jul 25 '11 at 07:39

score 1 · Answer 2 · edited May 23 '17 at 09:58

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Duplicate of this question.

This is how you do it, if anArray is your start array:

sortedArray = [anArray sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)];

Also, you should use NSDictionary for this, that way when it's sorted, both the keys and values are sorted the same.

edited May 23 '17 at 09:58

Community

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answered Jul 25 '11 at 07:24

Alex Coplan

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score 0 · Answer 3 · answered Jul 25 '11 at 07:30

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If there is no duplicated UserName in the second array, you could: 1. create a Map 2. put UserName array and UserID array to the Map with UserName -> UserID 3. sort the second array, the default order is alphabatical order. 4. sequentially access each element in the second array and get the related UserID from the map and rearrange the first array.

answered Jul 25 '11 at 07:30

ControlPower

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there might be username duplicate's but UserId will eb unique. – Ajay_Kumar Jul 25 '11 at 07:37

How to sort an array in alphabetical order

3 Answers3