Reconstruct Itinerary
Explore how to reconstruct a travel itinerary from airline ticket pairs using graph theory and depth-first search. Understand sorting and traversal techniques to find the smallest lexical order path. This lesson helps you implement an efficient solution with clear time and space complexity analysis.
We'll cover the following...
We'll cover the following...
Description
Assume we have an array of airline tickets represented as pairs of departure and arrival airports like [from, to]. We have to reconstruct the itinerary in order. All tickets belong to a man who departs from a specified location, e.g., JFK. Therefore, the itinerary must begin with JFK. There might be multiple valid itineraries; you must return the itinerary with the smallest lexical order.
Constraints
Consider the following constraints:
- 1 <=
tickets.length<= 300 tickets[i].lengthmust be 2.- , == 3
- and