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Solution: Lucky Numbers in a Matrix

Explore how to find lucky numbers in a matrix, defined as elements that are the smallest in their row and largest in their column. Learn to implement an efficient algorithm with O(m×n) time complexity by analyzing rows and columns step-by-step. This lesson helps you apply problem-solving strategies relevant to graph-related challenges in coding interviews.

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Statement

Given an m×nm \times n matrix of distinct numbers, return the lucky number in the matrix.

A lucky number is an element of the matrix such that it is the smallest element in its row and largest in its column.

Constraints:

  • m= ...