LeetCode 452. Minimum Number of Arrows to Burst Balloons (用最少数量的箭引爆气球) 题目 链接 https://leetcode.cn/problems/minimum-number-of-arrows-to-burst-balloons/ 问题描述 有一些球形气球贴在一堵用 XY 平面表示的墙面上。墙面上的气球记录在整数数组 points ,其中points[i] = [xstart, xend] ...
LeetCode 0452. Minimum Number of Arrows to Burst Balloons用最少数量的箭引爆气球【Medium】【Python】【区间贪心】 Problem LeetCode There are a number of spherical balloons spread in two-dimensional space. For each balloon, provided input is the start and end coordinates of the horizontal diameter....
/* * @lc app=leetcode id=452 lang=cpp * * [452] Minimum Number of Arrows to Burst Balloons */ // @lc code=start class Solution { public: int findMinArrowShots(vector<vector<int>>& points) { if (points.empty()) return 0; sort(points.begin(), points.end(), [](const auto &...
Explanation: One arrow needs to be shot for each balloon for a total of 4 arrows. Example 3: Input: points = [[1,2],[2,3],[3,4],[4,5]] Output: 2 Explanation: The balloons can be burst by 2 arrows: - Shoot an arrow at x = 2, bursting the balloons [1,2] and [2,3]....
Given an array points where points[i] = [xstart, xend], return the minimum number of arrows that must be shot to burst all balloons. Example: Example 1: Input: points = [[10,16],[2,8],[1,6],[7,12]] Output: 2 Explanation: One way is to shoot one arrow for example at x =...
Minimum Number of Arrows to Burst Balloons 算法系列博客之Greedy Greedy 贪心算法是一种非常优美的算法,不过贪心算法本身的可行性很多时候会受到一些局限。但是一旦能够找到一种可行的贪心策略,问题的解决将会变得非常高效,因为通常情况下,贪心算法的复杂度是O(n) 本篇博客将运用这种思想来解决leetcode上452号问题 ...
我认为不管是按照起始位置还是按照终止位置排序都可以从左向右遍历，我们要比较的都是第i个气球的起始点和第i-1个气球终止点的位置关系而已。而且如果按照终止位置排序，else里 都不用判断最小值了，第i-1肯定比第i的小，因为是排好序的了。错
452. Minimum Number of Arrows to Burst Balloons (https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/description/)HintsSubmissionsDiscussSolution Pick One There are a number of spherical balloons spread in two-dimensional space. For each balloon, provided input is the start an...
LeetCode 452. Minimum Number of Arrows to Burst Balloons 2019-12-19 11:56 −原题链接在这里:https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/ 题目: There are a number of spherical balloons spread in two-dimension... ...
LeetCode 452. Minimum Number of Arrows to Burst Balloons 2019-12-19 11:56 −原题链接在这里:https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/ 题目: There are a number of spherical balloons spread in two-dimension... ...