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HomeLeetCode ProblemsThe Earliest and Latest Rounds Where Players Compete
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How to Solve The Earliest and Latest Rounds Where Players Compete Problem

Master the The Earliest and Latest Rounds Where Players Compete LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.

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Hard#1900
LeetCode Problem

The Earliest and Latest Rounds Where Players Compete

There is a tournament where n players are participating. The players are standing in a single row and are numbered from 1 to n based on their initial standing position (player 1 is the first player in the row, player 2 is the second player in the row, etc.). The tournament consists of multiple rounds (starting from round number 1). In each round, the ith player from the front of the row competes against the ith player from the end of the row, and the winner advances to the next round. When the number of players is odd for the current round, the player in the middle automatically advances to the next round. After each round is over, the winners are lined back up in the row based on the original ordering assigned to them initially (ascending order). The players numbered firstPlayer and secondPlayer are the best in the tournament. They can win against any other player before they compete against each other. If any two other players compete against each other, either of them might win, and thus you may choose the outcome of this round. Given the integers n, firstPlayer, and secondPlayer, return an integer array containing two values, the earliest possible round number and the latest possible round number in which these two players will compete against each other, respectively.

Dynamic ProgrammingMemoization

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Problem Breakdown

Understanding the The Earliest and Latest Rounds Where Players Compete Problem

Let's break down this LeetCode problem and understand what makes it challenging in interview settings.

Problem Statement

There is a tournament where n players are participating. The players are standing in a single row and are numbered from 1 to n based on their initial standing position (player 1 is the first player in the row, player 2 is the second player in the row, etc.). The tournament consists of multiple rounds (starting from round number 1). In each round, the ith player from the front of the row competes against the ith player from the end of the row, and the winner advances to the next round. When the number of players is odd for the current round, the player in the middle automatically advances to the next round. After each round is over, the winners are lined back up in the row based on the original ordering assigned to them initially (ascending order). The players numbered firstPlayer and secondPlayer are the best in the tournament. They can win against any other player before they compete against each other. If any two other players compete against each other, either of them might win, and thus you may choose the outcome of this round. Given the integers n, firstPlayer, and secondPlayer, return an integer array containing two values, the earliest possible round number and the latest possible round number in which these two players will compete against each other, respectively.

HardProblem #1900
LeetCode

The Earliest and Latest Rounds Where Players Compete

Related Topics

Dynamic ProgrammingMemoization

How Phantom Code Helps

Get real-time assistance for The Earliest and Latest Rounds Where Players Compete problems during coding interviews. Phantom Code provides instant solutions and explanations.

Examples

# Example 1

Input
n = 11, firstPlayer = 2, secondPlayer = 4
Output
[3,4]

# Example 2

Input
n = 5, firstPlayer = 1, secondPlayer = 5
Output
[1,1]

Constraints

2 <= n <= 28
1 <= firstPlayer < secondPlayer <= n

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Solve The Earliest and Latest Rounds Where Players Compete — There is a tournament where n players are participating. The players are standin...

Here's the optimal approach using Dynamic Programming:

def solve(input):
# Optimal O(n) solution
return result

Time: O(n)  |  Space: O(n)

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We work with Zoom, HackerRank, CodeSignal, CoderPad and other web-based platforms. Check the compatibility note and request a browser link if a specific desktop app is unsupported.

Frequently Asked Questions

Common questions about solving The Earliest and Latest Rounds Where Players Compete and using Phantom Code during coding interviews.

How does Phantom Code help me solve coding problems like The Earliest and Latest Rounds Where Players Compete 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 The Earliest and Latest Rounds Where Players Compete?
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 The Earliest and Latest Rounds Where Players Compete?
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 The Earliest and Latest Rounds Where Players Compete 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 The Earliest and Latest Rounds Where Players Compete 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 The Earliest and Latest Rounds Where Players Compete 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 The Earliest and Latest Rounds Where Players Compete 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 The Earliest and Latest Rounds Where Players Compete 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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