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How to Solve Row With Maximum Ones Problem
Master the Row With Maximum Ones LeetCode problem with undetectable real-time assistance. Get instant solutions and explanations during your coding interviews.
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Start Free for WindowsEasy#2643
LeetCode ProblemRow With Maximum Ones
Given a m x n binary matrix mat, find the 0-indexed position of the row that contains the maximum count of ones, and the number of ones in that row. In case there are multiple rows that have the maximum count of ones, the row with the smallest row number should be selected. Return an array containing the index of the row, and the number of ones in it.
ArrayMatrix
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Problem Breakdown
Understanding the Row With Maximum Ones Problem
Let's break down this LeetCode problem and understand what makes it challenging in interview settings.
Problem Statement
Given a m x n binary matrix mat, find the 0-indexed position of the row that contains the maximum count of ones, and the number of ones in that row. In case there are multiple rows that have the maximum count of ones, the row with the smallest row number should be selected. Return an array containing the index of the row, and the number of ones in it.
EasyProblem #2643
LeetCodeRow With Maximum Ones
Related Topics
ArrayMatrix
How Phantom Code Helps
Get real-time assistance for Row With Maximum Ones problems during coding interviews. Phantom Code provides instant solutions and explanations.
Examples
# Example 1
Input
mat = [[0,1],[1,0]]
Output
[0,1]
# Example 2
Input
mat = [[0,0,0],[0,1,1]]
Output
[1,2]
# Example 3
Input
mat = [[0,0],[1,1],[0,0]]
Output
[1,2]
Constraints
m == mat.length
n == mat[i].length
1 <= m, n <= 100
mat[i][j] is either 0 or 1.
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Solve Row With Maximum Ones — Given a m x n binary matrix mat, find the 0-indexed position of the row that con...
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 Row With Maximum Ones and using Phantom Code during coding interviews.
How does Phantom Code help me solve coding problems like Row With Maximum Ones 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 Row With Maximum Ones?
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 Row With Maximum Ones?
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 Row With Maximum Ones 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 Row With Maximum Ones 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 Row With Maximum Ones 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 Row With Maximum Ones 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 Row With Maximum Ones 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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