Sorting IBOutletCollection Array of TextFields According to frame.origin.y - iphone

Question

I'm trying to sort array of textFields according to frame.origin.y. But when I ran simulator it got stuck. Any Idea?
IBOutletCollection(UITextField) NSArray *textFields
My code :
-(NSMutableArray *)bubbleSort:(NSMutableArray *) unsortedArray{
NSInteger i,j;
//NSLog(#"%#",unsortedArray);
for(i=0;i<unsortedArray.count;i++)
{
for(j=0;j<i;j++)
{
if(((UITextField *)[unsortedArray objectAtIndex:i]).frame.origin.y > ((UITextField *)[unsortedArray objectAtIndex:j]).frame.origin.y)
{
UITextField *temp=[unsortedArray objectAtIndex:i];
[unsortedArray insertObject:[unsortedArray objectAtIndex:j] atIndex:i];
[unsortedArray insertObject:temp atIndex:j];
}
}
}
//NSLog(#"%#",unsortedArray);
return unsortedArray;
}

Answer 1

Like Learner said, you just keep on inserting object in your array, so you never leave your outer for loop. To swap two elements, you can use
- (void)exchangeObjectAtIndex:(NSUInteger)idx1 withObjectAtIndex:(NSUInteger)idx2
so in your case, inside your if, you can simply write
[unsortedArray exchangeObjectAtIndex:i withObjectAtIndex:j];
Reference

Answer 2

look like this will keep on inserting object in array. so unsortedArray.count will keep increasing. in my opinion you need to remove object first and than insert it to upper rank or lower rank depending on algorithm.
se documentation for NSMutableArray insert object function.
https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/Foundation/Classes/NSMutableArray_Class/Reference/Reference.html