Swaping UIIMageViews

Question

Hello Friends facing this Problem:: Problem Definition:: I have to move the image sprites on the screen now when one of the image Sprite goes beyond limit i have to shuffle all of the UIImageView sprites.

My Code:

Basically Phase 1 that i'm doing is Shuffling:: that goes like this

    tmpview = mapSRightImgView;
    mapSRightImgView = mapFRightImgView;
    mapFRightImgView = mapCenterImgView;
    mapCenterImgView = mapFLeftImgView;
    mapFLeftImgView  = mapSLeftImgView;
    mapSLeftImgView  = tmpview;

now for time being i'm putting basck the removed sprite as the one to Second Left Image Sprite. Here [F-First & S-Second]

Now the Second Phase includes the shuffling of the images x-coordinates which i'm storing in an array:

for (int i = 0; i<4; i++)
{
 value_Array = [image_x objectAtIndex:(i+1)];
 NSLog(@"Values in image_x at index::%d are::%f",i,value_Array.floatValue);
 [image_x replaceObjectAtIndex:i withObject:value_Array];
 if( i == 3)
 {
  value_Array = [image_x objectAtIndex:(i+1)];
  tmpValue = value_Array.floatValue;
  value_Array = [NSNumber numberWithFloat:(tmpValue+340)];
  NSLog(@"Values in image_x at index::%d are::%f",(i+1),value_Array.floatValue);
  [image_x replaceObjectAtIndex:(i+1) withObject:value_Array];
 }
}

Now I'm doing is calling [self setNeedsDisplay];

The problem is that after all this the result is some what messy and disgusting.

Is there any simpler way of achieving this kind of arrangement. Please friends help me>>>