FACEBOOK - WALLS AND GATES (LeetCode)

This is one of Facebook's most commonly asked interview questions according to LeetCode (2019)! Walls and Gates coding solution. If you give me 5 minutes you'll thank me if this appears during your Facebook interview! Coding Interviews Walls and Gates (LeetCode) question and explanation.

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This question is commonly asked by the following companies: Facebook, Amazon, Microsoft, and Uber.

Link to problem: https://leetcode.com/problems/walls-and-gates/

Intuition behind solution: Iterate through the grid running a dfs on every single gate we encounter. During our dfs we stop if we have, gone out of the bounds of the grid, or if the cell we are currently on has a smaller distance than our current distance (this means there is another gate that is closer to it than the gate we are currently running a dfs on). Once we have finished iterating through the board we will have updated all reachable cells with their respective shortest distances to a gate.

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Видео FACEBOOK - WALLS AND GATES (LeetCode) канала Kevin Naughton Jr.