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How to Solve Implement Router Problem
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Start Free for WindowsMedium#3508
LeetCode ProblemImplement Router
Design a data structure that can efficiently manage data packets in a network router. Each data packet consists of the following attributes: Implement the Router class: Router(int memoryLimit): Initializes the Router object with a fixed memory limit. bool addPacket(int source, int destination, int timestamp): Adds a packet with the given attributes to the router. int[] forwardPacket(): Forwards the next packet in FIFO (First In First Out) order. int getCount(int destination, int startTime, int endTime): Note that queries for addPacket will be made in increasing order of timestamp.
ArrayHash TableBinary SearchDesignQueueOrdered Set
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Problem Breakdown
Understanding the Implement Router Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
Design a data structure that can efficiently manage data packets in a network router. Each data packet consists of the following attributes: Implement the Router class: Router(int memoryLimit): Initializes the Router object with a fixed memory limit. bool addPacket(int source, int destination, int timestamp): Adds a packet with the given attributes to the router. int[] forwardPacket(): Forwards the next packet in FIFO (First In First Out) order. int getCount(int destination, int startTime, int endTime): Note that queries for addPacket will be made in increasing order of timestamp.
MediumProblem #3508
LeetCodeImplement Router
Related Topics
ArrayHash TableBinary SearchDesignQueueOrdered Set
How Phantom Code Helps
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Examples
# Example 1
Input
["Router", "addPacket", "addPacket", "addPacket", "addPacket", "addPacket", "forwardPacket", "addPacket", "getCount"] [[3], [1, 4, 90], [2, 5, 90], [1, 4, 90], [3, 5, 95], [4, 5, 105], [], [5, 2, 110], [5, 100, 110]]
Output
[null, true, true, false, true, true, [2, 5, 90], true, 1]
# Example 2
Input
["Router", "addPacket", "forwardPacket", "forwardPacket"] [[2], [7, 4, 90], [], []]
Output
[null, true, [7, 4, 90], []]
Constraints
2 <= memoryLimit <= 105
1 <= source, destination <= 2 * 105
1 <= timestamp <= 109
1 <= startTime <= endTime <= 109
At most 105 calls will be made to addPacket, forwardPacket, and getCount methods altogether.
queries for addPacket will be made in increasing order of timestamp.
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Solve Implement Router — Design a data structure that can efficiently manage data packets in a network ro...
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Frequently Asked Questions
Common questions about solving Implement Router and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Implement Router during interviews?
Phantom Code generates complete solutions instantly with proper complexity analysis, letting you focus on explaining your approach and demonstrating problem-solving skills rather than getting stuck on implementation details during high-pressure situations.
What if the interviewer asks follow-up questions or modifications to problems like Implement Router?
Phantom Code adapts in real-time. Screenshot the modified problem or use audio mode to capture the interviewer's follow-up, and get an updated solution within seconds — including edge cases and optimizations.
Can Phantom Code help me communicate my solution for problems like Implement Router?
Yes. Phantom Code provides step-by-step approach explanations with 3 progressive thoughts, so you can walk through your solution naturally. It also provides time and space complexity analysis to discuss trade-offs.
How does Phantom Code assist with different programming languages for Implement Router type problems?
Phantom Code supports 11 programming languages including Python, Java, C++, JavaScript, TypeScript, Go, Rust, Ruby, Swift, Kotlin, and C#. Set your preferred language and get idiomatic solutions.
What coding mistakes does Phantom Code help me avoid during Implement Router interviews?
Phantom Code catches common mistakes like off-by-one errors, missing edge cases, incorrect base conditions, and suboptimal approaches. It provides clean, well-structured code that handles all edge cases.
Is Phantom Code detectable when solving problems like Implement Router during live interviews?
No. Phantom Code runs as an invisible desktop overlay that doesn't appear in screen shares, recordings, or proctoring software. It works with Zoom, HackerRank, CodeSignal, CoderPad, and all major platforms.
How does Phantom Code help when I'm struggling with Implement Router style questions under pressure?
The AI provides structured guidance: first the approach (what algorithm/data structure to use and why), then the implementation with clean code, and finally complexity analysis. This helps you think clearly even under pressure.
Does Phantom Code work for the coding platforms used in Implement Router interviews?
Yes. Phantom Code works with all major coding platforms including LeetCode, HackerRank, CodeSignal, CoderPad, HackerEarth, and any browser-based coding environment.
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