keep few images and delete the rest in a folder

Suppose I have 10 images, and i have saved all the pathname and filename in a variable all_files

I have a vector b = [ 2 4 6 ];

Now I want to keep only these images and delete all the other 7 images

How to keep those images and delete the rest?

Answer 1

[Walter Roberson]

dels = setdiff(1:length(all_files), b);
arrayfun(@(idx)delete(all_files{idx}), dels);