@interface NSArray (SleepSort)
- (void)sleepSortObjectsUsingBlock:(void (^)(id obj))block;
@end

@implementation NSArray (SleepSort)

- (void)sleepSortObjectsUsingBlock:(void (^)(id obj))block
{
    for (id obj in self) {
        NSDictionary *info = [NSDictionary dictionaryWithObjectsAndKeys:obj, @"obj", block, @"block", nil];
        [self performSelector:@selector(_handleSleepSortItemWithInfo:) withObject:info afterDelay:[obj intValue]];
    }
}

- (void)_handleSleepSortItemWithInfo:(NSDictionary *)info
{
    id obj = [info objectForKey:@"obj"];
    void (^block)(id obj) = [info objectForKey:@"block"];
    block(obj);
}

@end

To use:


    NSArray *items = [NSArray arrayWithObjects:
        [NSNumber numberWithInt:5],
        [NSNumber numberWithInt:3],
        [NSNumber numberWithInt:6],
        [NSNumber numberWithInt:3],
        [NSNumber numberWithInt:6],
        [NSNumber numberWithInt:3],
        [NSNumber numberWithInt:1],
        [NSNumber numberWithInt:4],
        [NSNumber numberWithInt:7],
        nil];
    
    [items sleepSortObjectsUsingBlock:^(id obj) { NSLog(@"obj = %@", obj); }];
//objectc/6503