Obj-C：在Array的索引处添加对象

Question

我正在尝试将数组的某些索引处的对象添加到新数组中。我找到了一个解决方案，但有更优雅的方法吗？这就是我所拥有的。

 NSMutableArray *objectsToAdd = [[NSMutableArray alloc]init];

    for (NSIndexPath *indexPath in self.selectedIndexes)
    {
        for (Object *object in self.unsortedObjects) {
            if (indexPath.row == [self.unsortedObjects indexOfObject:object]) {
                [objectsToAdd addObject:object];
            }
        }
    }

Answer 1

我相信self.selectedIndexes是NSArray或NSMutableArray。希望帮助

NSMutableArray *objectsToAdd = [[NSMutableArray alloc]init];
for (NSIndexPath *indexPath in self.selectedIndexes)
{
    if (indexPath.row < [self.unsortedObjects count]) {
        [objectsToAdd addObject:self.unsortedObjects[indexPath.row]] ;
    }
}