gen whole lot random variables (and random order) efficiently

Hi all,

One of the statistical computations that I've been working on involves assigning 10,000 columns of random orders. I can't really think of any efficient way for this part of the task, so I want to seek help from you guys. Detailed info and example see below:

What I want to do is to generate 10,000 sets of random orders from 1 to 1000. It should look something like this:

order1	order2	order3	...	order10000
1	999	567	...	1000
2	976	432	...	999
...	...	...	...	...
1000	2	254	...	1

One way that I can think of to achieve what I want is:

PHP Code:

clear all
set obs 1000

forvalues i = 1/10000 {
    gen u`i' = runiform()
    sort u`i'    
    gen order`i' = _n
} 


But as you can imagine, this is pretty inefficient. Is there any way you know to generate the wanted data more efficiently?

Thank,
CL