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How to Solve Find Winner on a Tic Tac Toe Game Problem
Master the Find Winner on a Tic Tac Toe Game LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsEasy#1275
LeetCode ProblemFind Winner on a Tic Tac Toe Game
Tic-tac-toe is played by two players A and B on a 3 x 3 grid. The rules of Tic-Tac-Toe are: Given a 2D integer array moves where moves[i] = [rowi, coli] indicates that the ith move will be played on grid[rowi][coli]. return the winner of the game if it exists (A or B). In case the game ends in a draw return "Draw". If there are still movements to play return "Pending". You can assume that moves is valid (i.e., it follows the rules of Tic-Tac-Toe), the grid is initially empty, and A will play first.
ArrayHash TableMatrixSimulation
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Problem Breakdown
Understanding the Find Winner on a Tic Tac Toe Game Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
Tic-tac-toe is played by two players A and B on a 3 x 3 grid. The rules of Tic-Tac-Toe are: Given a 2D integer array moves where moves[i] = [rowi, coli] indicates that the ith move will be played on grid[rowi][coli]. return the winner of the game if it exists (A or B). In case the game ends in a draw return "Draw". If there are still movements to play return "Pending". You can assume that moves is valid (i.e., it follows the rules of Tic-Tac-Toe), the grid is initially empty, and A will play first.
EasyProblem #1275
LeetCodeFind Winner on a Tic Tac Toe Game
Related Topics
ArrayHash TableMatrixSimulation
How Phantom Code Helps
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Examples
# Example 1
Input
moves = [[0,0],[2,0],[1,1],[2,1],[2,2]]
Output
"A"
# Example 2
Input
moves = [[0,0],[1,1],[0,1],[0,2],[1,0],[2,0]]
Output
"B"
# Example 3
Input
moves = [[0,0],[1,1],[2,0],[1,0],[1,2],[2,1],[0,1],[0,2],[2,2]]
Output
"Draw"
Constraints
1 <= moves.length <= 9
moves[i].length == 2
0 <= rowi, coli <= 2
There are no repeated elements on moves.
moves follow the rules of tic tac toe.
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Solve Find Winner on a Tic Tac Toe Game — Tic-tac-toe is played by two players A and B on a 3 x 3 grid. The rules of Tic-T...
Here's the optimal approach using Array:
def solve(input):
# Optimal O(n) solution
return result
Time: O(n) | Space: O(n)
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Frequently Asked Questions
Common questions about solving Find Winner on a Tic Tac Toe Game and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Find Winner on a Tic Tac Toe Game 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 Find Winner on a Tic Tac Toe Game?
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 Find Winner on a Tic Tac Toe Game?
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 Find Winner on a Tic Tac Toe Game 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 Find Winner on a Tic Tac Toe Game 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 Find Winner on a Tic Tac Toe Game 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 Find Winner on a Tic Tac Toe Game 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 Find Winner on a Tic Tac Toe Game 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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