push({nx, ny}); } } } return -1; } int main() { vector<vector<int>> grid = {{0, 1}, {1, 0}}; cout << shortestPathBinaryMatrix(grid) << endl; // 输出: 2 return 0; } A*搜索算法 A搜索算法是一种启发式搜索算法,结合了Dijkstra算法和贪心算法...
class Solution { public: void full_dire(int x, int y, queue<pair<int, int>> &path, vector<vector<int>>& grid){ if(x > 0 && y > 0 && grid[x - 1][y - 1] == 0){ grid[x - 1][y - 1] = grid[x][y] + 1; path.push({x - 1, y - 1}); } if(y > 0 && ...
1classSolution {2public:3vector<vector<int>> dir={{-1,-1},{-1,0},{-1,1},{0,-1},{0,1},{1,-1},{1,0},{1,1}};4intshortestPathBinaryMatrix(vector<vector<int>>&grid) {5intn =grid.size();6intstep =0;7queue<pair<int,int>>q;8if(grid[0][0]==0&& grid[n-1][n-...
二进制矩阵中的最短路径 Shortest Path In Binary Matrix 给定一个N*N矩阵grid,返回一个最短路径,如果没有就返回-1; 最短路径:从grid的左上角[0,0]开始,直到右下角[n-1,n-1],所有路径上的点必须是0, 路径可以是上下左右,还可以是左上左下,右上右下。 grid =[[0,1],[1,0]]out:2 思路 grid...
1091. Shortest Path in Binary Matrix # 题目# In an N by N square grid, each cell is either empty (0) or blocked (1). A clear path from top-left to bottom-right has length k if and only if it is composed of cells C_1, C_2, ..., C_k such that: Adjacent cells C_i and...
class Solution { public int shortestPathBinaryMatrix(int[][] grid) { int n = grid.length - 1; Queue<Pair<Integer,Integer>> q = new ArrayDeque<Pair<Integer,Integer>>(); q.add(new Pair(0, 0)); if (grid[0][0] == 1 || grid[n][n] == 1) return -1; // grid[0][0]是出...
1091. Shortest Path in Binary Matrix刷题笔记 问题描述很显然是一种最短路问题,可以用广度优先来做(可以理解为大水漫灌) LeetCode代码: class Solution: def shortestPathBinaryMatrix(self, grid: List[List[int]]) -> int: m = len(grid) n = len(grid[0])...
LeetCode-1091. Shortest Path in Binary Matrix In an N by N square grid, each cell is either empty (0) or blocked (1). A clear path from top-left to bottom-right has length k if and only if it is composed of cells C_1, C_2, ..., C_k such that: Adjacent cells C_i and...
Given amazein the form of a binary rectangular matrix, find the shortest path’s length in the maze from a given source to a given destination. The path can only be constructed out of cells having value 1, and at any moment, we can only move one step in one of the four directions....
Shortest Path in Binary Matrix queue.append((i+1, j+1, count)) return -1 Reference https://leetcode.com/problems/shortest-path-in-binary-matrix 30510 Shortest Unsorted Continuous Subarray } } return end - start + 1; } }; Reference https://leetcode.com/problems/shortest-unsorted-continuous...