test_rank_filter.cxx: Changed the fill scheme for the 2D arrays to make them more efficient.
test_rank_filter.cxx: Changed the fill scheme for the 2D arrays to make them more efficient.

jakirkham/rank_filter,nanshe-org/rank_filter,DudLab/rank_filter,nanshe-org/rank_filter,DudLab/rank_filter,jakirkham/rank_filter,DudLab/rank_filter,nanshe-org/rank_filter,jakirkham/rank_filter