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Grokking the Coding Interview Patterns in JavaScript

Solution: Shortest Path in a Grid with Obstacles Elimination

Explore how to solve the shortest path in a grid with obstacles by using BFS combined with obstacle elimination. This lesson guides you through encoding states to handle multiple paths and optimally finding the minimum steps required, preparing you for complex grid traversal challenges in coding interviews.

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Statement

Given an m x n integer matrix grid, where each cell contains either 00 (empty) or 11 (obstacle), you may move one step at a time in any of the four directions (up, down, left, right), but only into empty cells.

Return the minimum number of steps required to travel from the upper-left corner ((0, 0 ...