my program depend on matching between input image and my database images
then it have for each image (input , database images) locs and descriptors
then i want to save locs and descriptors of database images in to skip list data structure
then what i want is how to sort those locs and descriptors which found in to skip list ?? and how to make the search easily between input and what similar to image in DB to match between them ?? and how able them not to spend more time ??