sort array specified indexes IOS

Question

I' want to filter NSARRAY based on an object named id, I've specific set of Ids that I want to filter and want to be first in NSARRAY.

I stored the following Ids as NSNUMEBR

         NSNumber *A = [NSNumber numberWithInt:1122];
         NSNumber *B = [NSNumber numberWithInt:1345];
         NSNumber *C = [NSNumber numberWithInt:1667];
         NSNumber *D = [NSNumber numberWithInt:1223];
         NSNumber *E = [NSNumber numberWithInt:1213];
         NSNumber *F = [NSNumber numberWithInt:1123];
         NSNumber *G = [NSNumber numberWithInt:1555];
         NSNumber *H = [NSNumber numberWithInt:1666];
         NSNumber *I = [NSNumber numberWithInt:1567];

These are the set of ids that I want to filter and want to be first in my NSARRAY (Can be NSMutableArray for operation)

EDIT 1:

the NSARRAY is basically getting the id object as

Ids = [dict valueForKey:@"id"];

That selective ids are stored in NSNUMBER A to I

Your question is not clear, and your example has obvious syntax errors. Can you improve your question? — , May 04 '15 at 16:44
you want to clear a array? or what is that strange loop (including the assignment above) supposed to do? — luk2302, May 04 '15 at 16:45
@luk2302 I want to remove that indexes and then add on the top of the array. — developer, May 04 '15 at 16:45
the loop is removing that ids once so that I can add them later together, — developer, May 04 '15 at 16:46
`I' want to filter NSARRAY based on an object named id` I don´t see any NSArray anywhere, I don´t see any filtering and i dont see anything like an id (ignoring the syntax error) — luk2302, May 04 '15 at 16:48
@luk2302 id is basically the object, I collected that in NSNUMBER — developer, May 04 '15 at 16:49

score 0 · Accepted Answer · answered May 05 '15 at 04:21

It is unclear what you are asking, as indicated by the down votes and comments. But let's see if we can help. I think the following pseudo-code algorithm is what you are asking for:

MutableArray frontItems, rearItems;

for every item in sourceArray
   if item["id"] is in the collection of specific IDs
   then add item to end of frontItems
   else add item to end of rearItems

add rearItems to end of frontItems to give result

Write that in Objective-C and I think you have what you want.

HTH

score 0 · Answer 2 · answered May 05 '15 at 04:45

//Creat array have all item : A->I

NSNumber *A = [NSNumber numberWithInt:1122];
NSNumber *B = [NSNumber numberWithInt:1345];
NSNumber *C = [NSNumber numberWithInt:1667];
NSNumber *D = [NSNumber numberWithInt:1223];
NSNumber *E = [NSNumber numberWithInt:1213];
NSNumber *F = [NSNumber numberWithInt:1123];
NSNumber *G = [NSNumber numberWithInt:1555];
NSNumber *H = [NSNumber numberWithInt:1666];
NSNumber *I = [NSNumber numberWithInt:1567];

NSMutableArray *arr = [[NSMutableArray alloc] initWithObjects:A,B,C,...,I, nil];

for (NSNumber *idx in arr) {
    // To do
}

sort array specified indexes IOS

2 Answers2