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Solution: Lucky Numbers in a Matrix

Explore how to find lucky numbers in a matrix by applying a greedy algorithm that checks the smallest elements of rows against the largest elements of columns. Understand the problem constraints and implement a solution with O(m × n) time complexity and constant space. This lesson helps you develop skills to solve matrix-based problems efficiently 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= ...