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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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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.
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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.
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 PhantomCodeAI during coding interviews.
How does PhantomCodeAI help with LeetCode problems during a coding interview?
PhantomCodeAI reads the problem from a screenshot or listens to it via audio, then generates a complete solution with a step-by-step approach and time/space complexity, so you can focus on explaining your reasoning rather than getting stuck on implementation.
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Should I still practice these problems on my own first?
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