how to iterate an array in reverse order after it encounter last element?

Question

How to put condition for an array to display the images. if it encounters last element of array it should go to previous order i.e., consider array have some 5 elements. 0 1 2 3 4 i need to traverse from 0 1 2 3 4 after encounter 5th object now to it should traverse to 4 3 2 1 0. How to put this logic?

Possible duplicated of : http://stackoverflow.com/questions/586370/how-can-i-reverse-a-nsarray-in-objective-c — Sunny Shah, May 26 '14 at 06:29
Can you provide more information on what you are trying to achieve. Do you want to reverse direction again when reach the first element? — Paulw11, May 26 '14 at 06:50

score 0 · Answer 1 · answered May 26 '14 at 06:26

0

I just put my logic

for(int i = 0 ; i < myArray.count; i ++)
{
  NSLog(@"%d", i);
  if(i == myArray.count -1)
  {
    for(int j = myArray.count-1 ; j >= 0; j --)
    {
       NSLog(@"%d", j);
    }
  }
}

Try with it, its working well. :)

answered May 26 '14 at 06:26

iPatel

46,010
16
115
137

score 0 · Answer 2 · answered May 26 '14 at 06:27

0

The easiest way is doing 2 loops.

for (NSInteger i = 0;i < [array count]; i++)
{
    NSLog(@"%@", [array objectAtIndex:i]);
}

for (NSInteger i = [array count] - 1;i >= 0; i--)
{
    NSLog(@"%@", [array objectAtIndex:i]);
}

answered May 26 '14 at 06:27

Gonzo

1,533
16
28

how to iterate an array in reverse order after it encounter last element?

2 Answers2