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Solution: Lucky Numbers in a Matrix

Discover how to locate lucky numbers in a matrix by applying a greedy algorithm that finds elements that are the smallest in their row and largest in their column. This lesson guides you through step-by-step logic and implementation to solve the problem efficiently with O(m × n) time complexity.

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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= ...