Description: Selected the correct course to achieve the sort, as some courses have pre-course, so use a topological sort of knowledge.
To Search:
File list (Check if you may need any files):
Class_Plan-1.3
..............\Class_Plan-1.3
..............\Class_Plan-1.3.sln
..............\Class_Plan-1.3.suo
..............\..............\chain.h
..............\..............\citer1.h
..............\..............\Class_Plan-1.3.aps
..............\..............\Class_Plan-1.3.cpp
..............\..............\Class_Plan-1.3.h
..............\..............\Class_Plan-1.3.rc
..............\..............\Class_Plan-1.3.vcproj
..............\..............\Class_Plan-1.3.vcproj.PC-201003061339.Administrator.user
..............\..............\Class_Plan-1.3Dlg.cpp
..............\..............\Class_Plan-1.3Dlg.h
..............\..............\class_plan.cpp
..............\..............\class_plan.h
..............\..............\cnode.h
..............\..............\Debug
..............\..............\.....\BuildLog.htm
..............\..............\.....\Class_Plan-1.3.exe.embed.manifest
..............\..............\.....\Class_Plan-1.3.exe.embed.manifest.res
..............\..............\.....\Class_Plan-1.3.exe.intermediate.manifest
..............\..............\.....\Class_Plan-1.3.obj
..............\..............\.....\Class_Plan-1.3.pch
..............\..............\.....\Class_Plan-1.3.res
..............\..............\.....\Class_Plan-1.3Dlg.obj
..............\..............\.....\class_plan.obj
..............\..............\.....\mt.dep
..............\..............\.....\Mydialog.obj
..............\..............\.....\stdafx.obj
..............\..............\.....\vc80.idb
..............\..............\.....\vc80.pdb
..............\..............\fchain.h
..............\..............\ldbfs.cpp
..............\..............\ldg.h
..............\..............\lnbase.h
..............\..............\lqueue.h
..............\..............\lstack.h
..............\..............\Mydialog.cpp
..............\..............\Mydialog.h
..............\..............\network.h
..............\..............\node.h
..............\..............\ReadMe.txt
..............\..............\res
..............\..............\Resource.h
..............\..............\res\Class_Plan-1.3.ico
..............\..............\...\Class_Plan13.rc2
..............\..............\stdafx.cpp
..............\..............\stdafx.h
..............\..............\xcept.h
..............\..............\软工课程表.txt
..............\..............\软工选课问题1.txt
..............\..............\软工选课问题2.txt