Is it possible to randomize the order of items in an array?  I have an array list of the names of 16 7k images which I load into an array of PImages using loadImage in a loop in setup(). 

E.G.

1. String[] SpriteNames = {"sm8_rockstar.jpg","sm12_blonde.jpg","sm2_min.jpg","sm10_ozzy.jpg","sm3_pol.jpg","sm13_.jpg","sm7_guitar.jpg",
2.                         "sm1.jpg","sm4_clown.jpg","sm5_glamor.jpg","sm6_int.jpg","sm9_stooges.jpg","sm11_glamor2.jpg","sm14_.jpg"
3.                        };
4. PImage[] sprites; 
5. 
   
6. <SNIP>
7. 
   
8. void loadsprites() {
9.   sprites = new PImage[SpriteNames.length];
10.   for (int si = 0; si < SpriteNames.length;si++) {
11.      sprites[si] = loadImage(SpriteNames[si]);
12.   }
13. }

In draw(), I loop the array of PImages called sprites to draw each image. 

What I'd like to do is draw the images in a different order than they are stored in the PImages array.  I want to re-sort randomly the sprites array, e.g. make a copy of the sprites array, randomize the order of elements in the copy, and then instead of looping through the original array in draw, I loop through the copy with the randomized order.

I know how to copy an array.  I just don't know if there's a clever/convenient way to randomize the order of elements.

Or, would it be better not to copy an array of PImages. Instead create a new integer array called spriteorders where each integer is the index of an image in sprites array and then do something like image(sprites[spriteorders[si]],0,0), if that's possible.  Does creating a copy of an array of PImages bloat memory with additional loaded images or does it know the images are already loaded?

Or, instead of copying the arrays, I could do a "knuth shuffle" with something like SpritesRandom.add(sprites.remove(int(random(0,sprites.length)))) ;  ??

Here's the full code: http://pages.suddenlink.net/tls/stevo_applet/ (not current but has all relevant parts).  It throws an intermittent exeception  java.net.MalformedURLException: no protocol: loading.gif on startup sometimes; refresh usually clears it.