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MTA.rb

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+
+
+
+
+def getStopsString(line, startStop, endStop) 
+    lines = {
+  "r" => ["South Station", "Park Street", "Kendall", "Central", "Harvard", "Porter", "Davis" , "Alewife"],
+  "g" => ["Government Center", "Park Street", "Boylston", "Arlington", "Copley" , "Hynes" , "Kenmore"],
+  "o" => ["North Station", "Haymarket", "Park Street", "State", "Downtown Crossing", "Chinatown", "Back Bay" ,"Forest Hills"]
+
+}
+stopsCount =0
+  lineArray = lines[line]
+   stopsString = ""
+
+   startStationIndex = lineArray.index startStop
+   endStationIndex = lineArray.index endStop
+
+    if (startStationIndex < endStationIndex)  
+      i = startStationIndex + 1 
+       while i <= endStationIndex do
+      stopsString += lineArray[i] 
+      stopsCount += 1
+      i +=1
+
+       end  
+       return puts "numbers of stops are #{stopsCount}"
+    else
+          i = startStationIndex - 1
+       while i >= endStationIndex do
+      stopsString += lineArray[i] 
+      stopsCount += 1
+      i -=1
+
+       end
+    #    return  puts "numbers of stops are #{stopsCount}"
+    return stopsString
+   end
+
+
+
+end
+
+
+# getStopsString("r" , "South Station" , "Porter")
+
+
+
+
+def  planTrip(startLine, startStop, endLine, endStop) 
+  stopsCount = 0
+
+      if (startLine == endLine) 
+
+       returnedStopsString = getStopsString startLine, startStop, endStop
+       puts "You must travel through the following stops on the #{startLine}  line:  #{returnedStopsString} "
+
+
+     else
+    # Trip 1 - startStop to Union Square
+     returnedStopsStringTrip1 = getStopsString startLine, startStop, "Park Street"
+     puts "You must travel through the following stops on the #{startLine}  line:  #{returnedStopsString} "
+
+    # Change at US
+     puts "Change at Park Street."
+
+    #Trip 2 - Union Square to endStop
+
+     returnedStopsStringTrip2 = getStopsString(endLine, "Park Street", endStop);
+     return  puts "You must travel through the following stops on the #{startLine}  line:  #{returnedStopsString} "
+     end
+
+  puts "#{stopsCount} stops in total."
+end
+
+planTrip "r", "South Station", "g", "Boylston"