renamed:    vector.cpp -> 0_assign/vector.cpp
	renamed:    arraylist.cpp -> 1_assign/arraylist.cpp
	renamed:    arraylist.h -> 1_assign/arraylist.h
	renamed:    doublylist.cpp -> 1_assign/doublylist.cpp
	renamed:    doublylist.h -> 1_assign/doublylist.h
	renamed:    singlylist.cpp -> 1_assign/singlylist.cpp
	renamed:    singlylist.h -> 1_assign/singlylist.h
	renamed:    hugeints.cpp -> 2_assign/hugeints.cpp
	deleted:    list_ops_sg.cpp
	new file:   1_assign/list_ops_sg.cpp