question5 .........\.DS_Store __MACOSX ........\question5 ........\.........\._.DS_Store question5\hw5_problem5.m __MACOSX\question5\._hw5_problem5.m question5\k_nearest.m __MACOSX\question5\._k_nearest.m question5\orl_faces.mat __MACOSX\question5\._orl_faces.mat