alinaguzman / mta_js

MTA Lab

##Objective:

• Apply your knowledge of JavaScript to solve a problem we've already tackled in Ruby.

Activity

• Create a program that models a simple subway system.

• The program takes the line and stop that a user is getting on at and the line and stop that user is getting off at and prints the total number of stops for the trip.

• There are 3 subway lines:

  • The N line has the following stops: Times Square, 34th, 28th, 23rd, Union Square, and 8th
  • The L line has the following stops: 8th, 6th, Union Square, 3rd, and 1st
  • The 6 line has the following stops: Grand Central, 33rd, 28th, 23rd, Union Square, and Astor Place.
  • All 3 subway lines intersect at Union Square, but there are no other intersection points. (For example, this means the 28th stop on the N line is different than the 28th street stop on the 6 line, so you'll have to differentiate this when you name your stops in the arrays.)

Hints:

• Get the program to work for a single line before trying to tackle multiple lines.
• Don't worry about user input. Start off by just hardcoding your stop and line choices in local variables.
• Remember, you've done this in Ruby before. Look at your code and figure out how to do it in JavaScript.
• Consider diagraming the lines by sketching out the subway lines and their stops and intersection.
• Make subway lines are keys in a hash, while the values are an array of all the stops on each line.
• The key to the lab is finding the index positions of each stop.
• Make sure the stops that are the same for different lines have different names (i.e. 23rd on the N and on the 6 need to be differentiated)