Reconstruct Itinerary
Explore how to solve the Reconstruct Itinerary problem by representing flights as a graph and applying a depth-first search approach. This lesson helps you reconstruct travel routes starting from a fixed airport, ensuring all flights are used exactly once and the itinerary is lexically smallest. You will understand the algorithm's design, implementation, and complexity analysis in the context of Rust programming.
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