iOS-获取NSArray的前几个元素，取数组中某个元素

NSArray *smallArray = [largeArray subarrayWithRange:NSMakeRange(0, 10)];

NSArray *symptoms = [NSArray arrayWithArray:[self.dataSource[section] objectForKey:kDataSourceSectionKey]];


self.collectionModelArr = @[@[@"test0",@"test0", @"test0",@"test0", @"test0",@"test0", @"test0",@"test0", @"test0"], @[@"test1",@"test1", @"test1",@"test1", @"test1",@"test1", @"test1",@"test1", @"test1"], @[@"test2",@"test2", @"test2",@"test2", @"test2",@"test2", @"test2",@"test2", @"test2"], @[@"test3",@"test3", @"test3",@"test3", @"test3",@"test3", @"test3",@"test3", @"test3"], @[@"test4",@"test4", @"test4",@"test4", @"test4",@"test4", @"test4",@"test4", @"test4"]];

 NSArray *arr = self.collectionModelArr[2];
 JPLog(@“--打印结果--%@",arr);
--打印结果--(
    test2,
    test2,
    test2,
    test2,
    test2,
    test2,
    test2,
    test2,
    test2
)