Objective-C，按字母顺序对类型为class的NSMultable数组进行排序？

// 导入Foundation框架
#import <Foundation/Foundation.h>

int main() {
    // 创建一个包含多个class类型对象的NSMutableArray数组
    NSMutableArray *classArray = [NSMutableArray arrayWithObjects:
                                  [NSString class],
                                  [NSArray class],
                                  [NSNumber class],
                                  [NSDictionary class],
                                  nil];
    
    // 使用NSSortDescriptor进行排序
    NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"description" ascending:YES];
    [classArray sortUsingDescriptors:@[sortDescriptor]];
    
    // 打印排序后的数组
    for (Class class in classArray) {
        NSLog(@"%@", NSStringFromClass(class));
    }
    
    return 0;
}