@interface Person : NSObject

@property (nonatomic,copy) NSString *name;

@property (nonatomic,assign) int age;

@end

       //创建model

        Person *liming = [[Person alloc] init];

        liming.name = @"liming";

        liming.age = ;

        Person *zhangjie = [[Person alloc] init];

        zhangjie.name = @"zhangjie";

        zhangjie.age = ;

        Person *liuxin = [[Person alloc] init];

        liuxin.name = @"liuxin";

        liuxin.age = ;

        Person *wanghua = [[Person alloc] init];

        wanghua.name = @"wanghua";

        wanghua.age = ;
    

        //创建存储数组

        NSMutableArray *personArray = [NSMutableArray array];

        [personArray addObject:liming];

        [personArray addObject:zhangjie];

        [personArray addObject:liuxin];

        [personArray addObject:wanghua];        

        //model 按年龄属性 排序

        NSArray *ageSortResultArray = [personArray sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {

            Person *per1 = obj1;

            Person *per2 = obj2;

            if (per1.age > per2.age) {

                return NSOrderedDescending;//降序

            }else if (per1.age < per2.age)

            {

                return NSOrderedAscending;//升序

            }else

            {

                return NSOrderedSame;//相等

            }

        }];    

         //打印结果

        for (Person *per in ageSortResultArray) {

            NSLog(@"per.age = %d",per.age);

        }