将开发过程比较重要的代码做个珍藏，下面代码内容是关于睡眠排序法-objective C版的代码，应该能对各位朋友有帮助。 

@interface NSArray (SleepSort)- (void)sleepSortObjectsUsingBlock:(void (^)(id obj))block;@end@implementation NSArray (SleepSort)- (void)sleepSortObjectsUsingBlock:(void (^)(id obj))block{    for (id obj in self) {        [self performSelector:@selector(_handleSleepSortItemWithInfo:) withObject:info afterDelay:[obj intValue]];    }}{    id obj = [info objectForKey:@"obj"];    void (^block)(id obj) = [info objectForKey:@"block"];    block(obj);}@endTo use:        [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); }];    复制代码