You are asked to cut off trees in a forest for a golf event. The forest is represented as a non-negative 2D map, in this map: 0 represents the obstacle can't be reached. 1 represents the ground can be walked through. The place with number bigger than…

You are asked to cut off trees in a forest for a golf event. The forest is represented as a non-negative 2D map, in this map: 0 represents the obstacle can't be reached. 1 represents the ground can be walked through. The place with number bigger than…

You are asked to cut off trees in a forest for a golf event. The forest is represented as a non-negative 2D map, in this map: 0 represents the obstacle can't be reached. 1 represents the ground can be walked through. The place with number bigger than…

原题链接在这里:https://leetcode.com/problems/cut-off-trees-for-golf-event/description/ 题目: You are asked to cut off trees in a forest for a golf event. The forest is represented as a non-negative 2D map, in this map: 0 represents the obstacle can't be reach…

You are asked to cut off trees in a forest for a golf event. The forest is represented as a non-negative 2D map, in this map: 0 represents the obstacle can't be reached. 1 represents the ground can be walked through. The place with number bigger than…

// Potential improvements: // 1. we can use vector<int> { h, x, y } to replace Element, sorting vector is to compare elements one by one. // 2. use 2-d bool vector<vector<bool>> to replace unordered_set. class Element { public: int x, y,…

You are asked to cut off trees in a forest for a golf event. The forest is represented as a non-negative 2D map, in this map: 0 represents the obstacle can't be reached. 1 represents the ground can be walked through. The place with number bigger than…

为高尔夫比赛砍树 你被请来给一个要举办高尔夫比赛的树林砍树. 树林由一个非负的二维数组表示, 在这个数组中: 0 表示障碍,无法触碰到. 1 表示可以行走的地面. 比1大的数 表示一颗允许走过的树的高度. 你被要求按照树的高度从低向高砍掉所有的树,每砍过一颗树,树的高度变为1. 你将从(0,0)点开始工作,你应该返回你砍完所有树需要走的最小步数. 如果你无法砍完所有的树,返回 -1 . 可以保证的是,没有两棵树的高度是相同的,并且至少有一颗树需要你砍. 示例 1: 输入: [ [1,2,3],…

Leetcode之深度优先搜索(DFS)专题-515. 在每个树行中找最大值(Find Largest Value in Each Tree Row) 深度优先搜索的解题详细介绍,点击 您需要在二叉树的每一行中找到最大的值. 示例: 输入: 1 / \ 3 2 / \ \ 5 3 9 输出: [1, 3, 9] 分析:题意很简单,直接DFS. /** * Definition for a binary tree node. * public class TreeNode { * int val;…

For a undirected graph with tree characteristics, we can choose any node as the root. The result graph is then a rooted tree. Among all possible rooted trees, those with minimum height are called minimum height trees (MHTs). Given such a graph, write…