any link-list like data structure in opencv?

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any link-list like data structure in opencv?

liuliu_0503
I know the usage of link-list in CV is rare. However, the thing I recently implemented required to return a set of point which in link-list format is faster than regular array one. Any idea how to use CvSeq  (or any data structure in OpenCV)as a link list and still compatible with most methods(such as FitEllipse)? Examples are most appreciated.