Sleep Sort - Objective-C (Cocoa)

sleepsortcocoa.m

/* DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE 
                    Version 2, December 2004 

 Copyright (C) 2012 Dongsung "Don" Kim <kiding@me.com> 

 Everyone is permitted to copy and distribute verbatim or modified 
 copies of this license document, and changing it is allowed as long 
 as the name is changed. 

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE 
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 

  0. You just DO WHAT THE FUCK YOU WANT TO. 
*/

#import <Foundation/Foundation.h>

@interface SortControl : NSObject
- (void) sleepForTime:(id)param;
@end

@implementation SortControl

- (void) sleepForTime:(NSNumber *)param {
    usleep([param intValue] * 1000000);
    NSLog(@"%d", [param intValue]);
}

@end

int main (void)
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];
    
    int argv[9] = {1, 5, 7, 6, 2, 9, 8, 10, 13};
    int argc = 9;
    
    SortControl *control = [[[SortControl alloc] init] autorelease];
    
    NSMutableArray *threads = [NSMutableArray array];
    for(int i=0; i<argc; i++) {
        NSNumber *inputNumber = [NSNumber numberWithInt:argv[i]];
        NSInvocationOperation *thisThread = [[[NSInvocationOperation alloc] 
                                              initWithTarget:control 
                                              selector:@selector(sleepForTime:) 
                                              object:inputNumber] 
                                             autorelease];
        [threads addObject:thisThread];
    }
    
    NSOperationQueue *queue = [[[NSOperationQueue alloc] init] autorelease];
    [queue addOperations:threads waitUntilFinished:YES];
    
    [pool drain];
    return 0;
}