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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.

Statement

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

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= ...