Given ann x nbinary matrixgrid, returnthe length of the shortestclear pathin the matrix. If there is no clear path, return-1. Aclear pathin a binary matrix is a path from thetop-leftcell (i.e.,(0, 0)) to thebottom-rightcell (i.e.,(n - 1, n - 1)) such that: All the ...
参考: https://leetcode.com/problems/shortest-path-in-binary-matrix/discuss/312827/Python-Concise-BFS
Given ann x nbinary matrixgrid, returnthe 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...
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])...
shortest, path = FloydWarshall(graphData) for item in shortest: print(item) print() for item in path: print(item) 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 在SciPy中有一个官方提供的floyd_warshall函数,我们可以通过调用它来验证一下我们写的floydWarshall算法是否正确。有些不同的地方...
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...
Leetcode 934. Shortest Bridge 2. Solution **解析:**Version 1,先找到矩阵中第一个1作为起点,然后使用广度优先搜索找到所有相邻的1,即第一个岛,并将所有岛的坐标及更改的0计数保存到队列中,初始计数为0,搜索第一个岛的同时,将各个点对应的值设为2,防止重复搜索。从第一个岛的所有点开始,重新使用广度优先...
path.commonprefix(strs) 15. 3Sum 5行 class Solution: def threeSum(self, nums: List[int]) -> List[List[int]]: nums, r = sorted(nums), set() for i in [i for i in range(len(nums)-2) if i < 1 or nums[i] > nums[i-1]]: d = {-nums[i]-n: j for j, n in ...
View code README.md 🐍 Shortest-LeetCode-Python-Solutions Leet Code 刷题笔记 - - 不求最快最省,但求最短最优雅 🌿,Shorter is better here. 前言 代码精炼是 Python 的核心,同时能够反应对于语言的熟练程度,本项目目的在于汇总 leet code 最短最优雅的解法,拒绝长篇大论,缩短学习周期,掌握各种技巧...
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)...