Grokking the Coding Interview: Patterns for Coding Questions
Ask Author
Back to course home

0% completed

Solution: Number of Provinces
Table of Contents

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Problem Statement

There are n cities. Some of them are connected in a network. If City A is directly connected to City B, and City B is directly connected to City C, city A is directly connected to City C.

If a group of cities are connected directly or indirectly, they form a province.

Given an n x n matrix isConnected where isConnected[i][j] = 1 if the i<sup>th</sup> city and the j<sup>th</sup> city are directly connected, and isConnected[i][j] = 0 otherwise, determine the total number of provinces.

Examples

  • Example 1:
    • Input: isConnected =

.....

.....

.....

Like the course? Get enrolled and start learning!

Table of Contents

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible

Contents are not accessible