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Grokking the Coding Interview Patterns in Python

Number of Provinces

Explore how to determine the total number of provinces by identifying groups of directly or indirectly connected cities. Learn to analyze city connections in a matrix and implement efficient graph traversal solutions to solve this common coding interview problem.

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Statement

Given nn cities, some are directly connected, and others are not. You are given an n×nn \times n matrix called cities, where cities[i][j] =1= 1 means city ithi^{th} and city ...