随机产生一个课表

包括界面code
Revert "随机产生一个课表"

This reverts commit 6b3edc3eda2a72991c910427a1f31ec71d9adc04.
Revert "Revert "随机产生一个课表""

This reverts commit 07c531efd8cc02bc8070fca624ae9cefefa95911.