###PT PLANNER ####Melbourne Public Transport Journey Planner
There are 3 train lines:
The Alamein line has the following stops: Flinders Street, Richmond, East Richmond, Burnley, Hawthorn, and Glenferrie.
The Glen Waverly line has the following stops: Flagstaff, Melbourne Central, Parliament, Richmond, Kooyong and Tooronga.
The Sandringham line has the following stops: Southern Cross, Richmond, South Yarra, Prahran, and Windsor.
All 3 train lines intersect at Richmond, but there are NO other intersection points as trains run express.
Write a JS program that takes the line + stop that a user is getting on at and the line + stop that user is getting off at and prints the total number of stops for the trip.
#####Hints:
Get your JS program to work for a single line before trying to tackle multiple lines. Consider diagramming the lines by sketching out the train lines and their stops and intersection. Make train lines keys in a hash, while the values are an array of all the stops on each line.
The key to the lab is the intersection of the lines at Richmond.
####Non-Required Bonus:
- List the stations on the journey in order of travel
- Use input validation
- User must enter a line and station in the subway network
- If the user enters something else, your program should handle it
- Add an additional lines
- Allow trains to have multiple intersection points