Walls and Gates, is a LeetCode problem from graphs subdomain. In this post we will see how we can solve this challenge in Swift

Problem Description

You can find the full details of the problem Walls and Gates at LeetCode

Solution

Note: Start from gate to ease complexity, update distance correspondingly

Time Complexity: O((mn)^2), Space Complexity: O(1)

Please check the main.swift snippet for the solution.

This solution originally posted at: Github by @soapyigu