模擬捷運路線系統,此程式碼有三種功能,增加捷運站,刪除捷運站,以及計數功能 增加捷運站方面可以選擇位置增加,刪除捷運站也可選擇站刪除,而計數功能意思為,輸入出發站及終點站後,程式會自動計算中間有幾站,可預估時間-MRT line simulation system, this code has three functions, increasing MRT station, remove the MRT station, and counting function　increase the MRT station could select a location to add, delete MRT station can also choose to delete, and counting meaning, enter the starting point and destination, the program will automatically calculate the middle of a few stations, the time can be estimated