#import <UIKit/UIKit.h>

@interface SimpleClass : NSObject

@property (assign, readwrite) float value;

@end

@implementation SimpleClass

@end

@interface ComplexClass : NSObject

@property (strong, nonatomic) NSString *firstName;
@property (strong, nonatomic) NSString *lastName;
@property (assign, readwrite) float value;
@property (strong, nonatomic) NSArray *arr;

@end

@implementation ComplexClass

@end

@interface TimingViewController : UIViewController

@property (strong, nonatomic) NSMutableArray *simpleArray;
@property (strong, nonatomic) NSMutableArray *complexArray;

@end

@implementation TimingViewController

int numElements = 1000;
int numReps = 50;

- (void)viewDidLoad {
    [super viewDidLoad];

    self.view.backgroundColor = [UIColor systemYellowColor];

    _simpleArray = [NSMutableArray new];
    _complexArray = [NSMutableArray new];

    srand48(time(0));

    for (int i = 0; i < numElements; i++) {

        float r = drand48();

        SimpleClass *sc = [SimpleClass new];
        sc.value = r;
        [_simpleArray addObject:sc];

        ComplexClass *cc = [ComplexClass new];
        cc.value = r;
        cc.firstName = [NSString stringWithFormat:@"First %i", i];
        cc.lastName = [NSString stringWithFormat:@"Last %i", i];

        NSMutableArray *a = [NSMutableArray new];
        for (int j = 0; j < 1000; j++) {
            [a addObject:[NSNumber numberWithInt:j]];
        }
        cc.arr = [a mutableCopy];

        [_complexArray addObject:cc];
    }

}

- (void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event {

    double d = 0;

    NSLog(@"Sorting %d element array of Simple Objects %d times...", numElements, numReps);

    NSMutableArray *a = [NSMutableArray new];
    for (int j = 0; j < numReps; j++) {
        d = [self timingTest:_simpleArray];
        [a addObject:[NSNumber numberWithDouble:d]];
    }

    NSLog(@"Sorting %d element array of Complex Objects %d times...", numElements, numReps);

    NSMutableArray *b = [NSMutableArray new];
    for (int j = 0; j < numReps; j++) {
        d = [self timingTest:_complexArray];
        [b addObject:[NSNumber numberWithDouble:d]];
    }

    NSNumber *aAvg = [a valueForKeyPath:@"@avg.self"];
    NSNumber *bAvg = [b valueForKeyPath:@"@avg.self"];

    NSLog(@"Average Seconds for Simple:  %0.10f", [aAvg doubleValue]);
    NSLog(@"Average Seconds for Complex: %0.10f", [bAvg doubleValue]);

}

- (double)timingTest: (NSMutableArray *)a {

    CFTimeInterval startTime;
    CFTimeInterval endTime;

    NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"value" ascending:YES];

    startTime = CACurrentMediaTime();
    NSArray *aa = [a sortedArrayUsingDescriptors:@[sortDescriptor]];
    endTime = CACurrentMediaTime();

    return endTime - startTime;
}

@end