A city's skyline is the outer contour of the silhouette formed by all the buildings in that city when viewed from a distance. Now suppose you are given the locations and height of all the buildings as shown on a cityscape photo (Figure A), write a pr…

A city's skyline is the outer contour of the silhouette formed by all the buildings in that city when viewed from a distance. Now suppose you are given the locations and height of all the buildings as shown on a cityscape photo (Figure A), write a pr…

A city's skyline is the outer contour of the silhouette formed by all the buildings in that city when viewed from a distance. Now suppose you are given the locations and height of all the buildings as shown on a cityscape photo (Figure A), write a pr…

Problem: A city's skyline is the outer contour of the silhouette formed by all the buildings in that city when viewed from a distance. Now suppose you are given the locations and height of all the buildings as shown on a cityscape photo (Figure A), w…

题目: A city's skyline is the outer contour of the silhouette formed by all the buildings in that city when viewed from a distance. Now suppose you aregiven the locations and height of all the buildings as shown on a cityscape photo (Figure A), write a…

题目: A city's skyline is the outer contour of the silhouette formed by all the buildings in that city when viewed from a distance. Now suppose you are given the locations and height of all the buildings as shown on a cityscape photo (Figure A), write…

天际线问题,参考自: 百草园 天际线为当前线段的最高高度,所以用最大堆处理,当遍历到线段右端点时需要删除该线段的高度,priority_queue不提供删除的操作,要用unordered_map来标记要删除的元素.从heap中pop的时候先看有没有被标记过,如果标记过,就一直pop直到空或都找到没被标记过的值(之前的值被标记过也要删除干净,因为到当前x坐标时,标记过的高度已失效).为排除冗余答案,需要提前对线段排序,横坐标相等时,都是左端点,按y从大到小(只记录高的端点),都是右端点,按y从小到…

A rectangle is represented as a list [x1, y1, x2, y2], where (x1, y1) are the coordinates of its bottom-left corner, and (x2, y2) are the coordinates of its top-right corner. Two rectangles overlap if the area of their intersection is positive.  To b…

A rectangle is represented as a list [x1, y1, x2, y2], where (x1, y1) are the coordinates of its bottom-left corner, and (x2, y2) are the coordinates of its top-right corner. Two rectangles overlap if the area of their intersection is positive.  To b…

题目链接:https://leetcode-cn.com/problems/rectangle-overlap/ 矩形以列表 [x1, y1, x2, y2] 的形式表示,其中 (x1, y1) 为左下角的坐标,(x2, y2) 是右上角的坐标. 如果相交的面积为正,则称两矩形重叠.需要明确的是,只在角或边接触的两个矩形不构成重叠. 给出两个矩形,判断它们是否重叠并返回结果. 示例 1: 输入:rec1 = [0,0,2,2], rec2 = [1,1,3,3]输出:true示例 2: 输入:r…