void load_demo_9pts_map(MAP &pts) { pts.clear(); for (size_t i=0;i<demo9_N;i++) pts.insertPoint(demo9_xs[i],demo9_ys[i],demo9_zs[i]); }
///making hashtable null to be used for next iteration void make_root_null() { for ( int i = 0; i < s; i++ ) { hashmap.clear(); } }