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Grokking the Coding Interview Patterns in Go

Solution: Lucky Numbers in a Matrix

Understand how to find a lucky number in a matrix that is the smallest in its row and largest in its column. Learn the greedy algorithm that processes rows and columns to identify this unique element and ensures a time complexity of O(m×n). This lesson helps develop skills in analyzing matrix problems and applying optimal solutions.

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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:

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