@Override
        public int compareTo(Itinerary other) {
            if (this.start.equals(other.start)) {
                return this.dest.compareTo(other.dest);
            } else {
                return this.start.compareTo(other.start);
            }
        }
Date 03/08/2016
@author Tushar Roy

Reconstruct itinerary based on ticket.

https://leetcode.com/problems/reconstruct-itinerary/
src/com/interview/recursion/ReconstructItinerary.java