How to Solve Shortest Path in Binary Matrix Leetcode Problem - Interview Coder Guide
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How to Solve Shortest Path in Binary Matrix Problem

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Medium#1171
LeetCode Problem

Shortest Path in Binary Matrix

Given an n x n binary matrix grid, return the length of the shortest clear path in the matrix. If there is no clear path, return -1. A clear path in a binary matrix is a path from the top-left cell (i...

ArrayBreadth-First SearchMatrix

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Problem Breakdown

Understanding the Shortest Path in Binary Matrix Problem

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Problem Statement

Given an n x n binary matrix grid, return the length of the shortest clear path in the matrix. If there is no clear path, return -1. A clear path in a binary matrix is a path from the top-left cell (i.e., (0, 0)) to the bottom-right cell (i.e., (n - 1, n - 1)) such that: All the visited cells of the path are 0. All the adjacent cells of the path are 8-directionally connected (i.e., they are different and they share an edge or a corner). The length of a clear path is the number of visited cells of this path.

MediumProblem #1171
LeetCode

Shortest Path in Binary Matrix

Related Topics
ArrayBreadth-First SearchMatrix
How Interview Coder Helps

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Examples

Example 1
INPUT
grid = [[0,1],[1,0]]
OUTPUT
2
Example 2
INPUT
grid = [[0,0,0],[1,1,0],[1,1,0]]
OUTPUT
4
Example 3
INPUT
grid = [[1,0,0],[1,1,0],[1,1,0]]
OUTPUT
-1

Constraints

n == grid.length
n == grid[i].length
1 <= n <= 100
grid[i][j] is 0 or 1

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