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Solution: Lucky Numbers in a Matrix

Explore how to determine lucky numbers in a distinct element matrix by applying a greedy strategy that compares row minimums with column maximums. Understand step-by-step how to implement this solution with optimal time and constant space complexity for 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= ...