LeetCode 2112: The Airport With the Most Traffic Solution

Master LeetCode problem 2112 (The Airport With the Most Traffic), a medium challenge, with our optimized solutions in Java, C++, and Python. Explore detailed explanations, test your code in our interactive editor, and prepare for coding interviews.

2112. The Airport With the Most Traffic

Medium

Database

Problem Explanation

Explanation:

To solve this problem, we can use a graph representation where each airport is a node and each flight is a directed edge from the departure airport to the arrival airport. We need to find the airport with the most traffic, which is defined as the airport with the most number of incoming and outgoing flights.

We can iterate through all the flights and maintain a count of incoming and outgoing flights for each airport. Finally, we can find the airport with the maximum traffic by comparing the total number of incoming and outgoing flights for each airport.

Algorithm:

Create a graph where each airport is a node and each flight is a directed edge.
Iterate through all flights and update the incoming and outgoing flight count for each airport.
Find the airport with the most traffic by comparing the total incoming and outgoing flights for each airport.
Return the airport with the maximum traffic.

Time Complexity:

The time complexity of this approach is O(N), where N is the total number of flights.

Space Complexity:

The space complexity is O(N), where N is the total number of airports.

: :

Solution Code

class Solution {
    public int findAirportWithMostTraffic(int[][] flights) {
        HashMap<Integer, Integer> inFlights = new HashMap<>();
        HashMap<Integer, Integer> outFlights = new HashMap<>();
        
        for (int[] flight : flights) {
            outFlights.put(flight[0], outFlights.getOrDefault(flight[0], 0) + 1);
            inFlights.put(flight[1], inFlights.getOrDefault(flight[1], 0) + 1);
        }
        
        int maxTraffic = 0;
        int airport = -1;
        
        for (int airportNum : outFlights.keySet()) {
            int traffic = outFlights.getOrDefault(airportNum, 0) + inFlights.getOrDefault(airportNum, 0);
            if (traffic > maxTraffic) {
                maxTraffic = traffic;
                airport = airportNum;
            }
        }
        
        return airport;
    }
}

Try It Yourself

Loading code editor...

Frequently Asked Questions

How to solve LeetCode 2112 (The Airport With the Most Traffic)?

This page provides optimized solutions for LeetCode problem 2112 (The Airport With the Most Traffic) in Java, C++, and Python, along with a detailed explanation and an interactive code editor to test your code.

What is the time complexity of LeetCode 2112 (The Airport With the Most Traffic)?

The time complexity for LeetCode 2112 (The Airport With the Most Traffic) varies by solution. Check the detailed explanation section for specific complexities in Java, C++, and Python implementations.

Can I run code for LeetCode 2112 on DevExCode?

Yes, DevExCode provides an interactive code editor where you can write, test, and run your code for LeetCode 2112 in Java, C++, or Python.

Back to LeetCode Solutions