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] ...
代码参考: 1classSolution {2public:3boolstaticcmp(vector<int> a, vector<int>b) {4returna[1]<b[1];5}6//to find the minimal number of arrow shots7//means one shots to get max number of ballons which are all overlapping.8//but if there are mostly n non-overlapping ballons,9//howev...
/* * @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 &...
Arrows can be shot updirectly vertically(in the positive y-direction) from different points along the x-axis. A balloon withxstartandxendisburstby an arrow shot atxifxstart<= x <= xend. There isno limitto the number of arrows that can be shot. A shot arrow keeps traveling up infinitely...
题目描述:气球在一个水平数轴上摆放,可以重叠,飞镖垂直投向坐标轴,使得路径上的气球都会刺破。求解最小的投飞镖次数使所有气球都被刺破。 也是计算不重叠的区间个数,不过和 Non-overlapping Intervals 的区别在于,[1, 2] 和 [2, 3] 在本题中算是重叠区间。
452 Minimum Number of Arrows to Burst Balloons 用最少数量的箭引爆气球 Description: There are some spherical balloons spread in two-dimensional space. For each balloon, provided input is the start and end coordinates of the horizontal diameter. Since it's horizontal, y-coordinates don't matter,...
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 ...
452. Minimum Number of Arrows to Burst Balloons 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. Since it’s horizontal, y-coordinates don’t matter and hence the x-...
洛谷CF804B Minimum number of steps 2019-07-23 20:43 −... dfydn 0 152 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 balloo...
codeforces 805 D. Minimum number of steps(数学) 2017-05-05 08:33 −... Gealo 0 265 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...