Given n points on a 2D plane, find if there is such a line parallel to y-axis that reflect the given set of points. Example 1: Given points = [[1,1],[-1,1]], return true. Example 2: Given points = [[1,1],[-1,-1]], return false. Follow up: Could you d…

Given n points on a 2D plane, find if there is such a line parallel to y-axis that reflect the given points. Example 1: Given points = [[1,1],[-1,1]], return true. Example 2: Given points = [[1,1],[-1,-1]], return false. Follow up: Could you do bette…

Given n points on a 2D plane, find if there is such a line parallel to y-axis that reflect the given points. Example 1: Given points = [[1,1],[-1,1]], return true. Example 2: Given points = [[1,1],[-1,-1]], return false. Follow up:Could you do better…

Given n points on a 2D plane, find if there is such a line parallel to y-axis that reflect the given set of points. Example 1: Given points = [[1,1],[-1,1]], return true. Example 2: Given points = [[1,1],[-1,-1]], return false. Follow up:Could you do…

首先找到X方向的中点,如果中点是一个点,那么分别从这个点开始往左右找就行:如果是一个区间,比如1 2之间,那么首先总点数得是偶数,然后以1和2往左右两边找就行.. 找的时候,有3种情况: 同时没找到,继续: 一个找到,一个没找到,FALSE: 同时找到,左边找到的每个点,必须对应一个右边找到的每个点,纵坐标相同. 所以构架的时候,我用的 Map public class Solution { public boolean isReflected(int[][] points) { Map<Int…

There is a special square room with mirrors on each of the four walls.  Except for the southwest corner, there are receptors on each of the remaining corners, numbered 0, 1, and 2. The square room has walls of length p, and a laser ray from the south…

Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. 这道题给了我们一堆二维点,然后让我们求最大的共线点的个数,根据初中数学我们知道,两点确定一条直线,而且可以写成y = ax + b的形式,所有共线的点都满足这个公式.所以这些给定点两两之间都可以算一个斜率,每个斜率代表一条直线,对每一条直线,带入所有的点看是否共线并计算个数,这是整体的思路.但是还有…

终于将LeetCode的免费题刷完了,真是漫长的第一遍啊,估计很多题都忘的差不多了,这次开个题目汇总贴,并附上每道题目的解题连接,方便之后查阅吧~ 477 Total Hamming Distance 44.10% Meidum 475 Heaters  30.20% Easy 474 Ones and Zeroes  34.90% Meidum 473 Matchsticks to Square  31.80% Medium 472 Concatenated Words 29.20% Hard…

突然很想刷刷题,LeetCode是一个不错的选择,忽略了输入输出,更好的突出了算法,省去了不少时间. dalao们发现了任何错误,或是代码无法通过,或是有更好的解法,或是有任何疑问和建议的话,可以在对应的随笔下面评论区留言,我会及时处理,在此谢过了. 过程或许会很漫长,也很痛苦,慢慢来吧. 编号 题名 过题率 难度 1 Two Sum 0.376 Easy 2 Add Two Numbers 0.285 Medium 3 Longest Substring Without Repeating C…

All LeetCode Questions List(Part of Answers, still updating) 题目汇总及部分答案(持续更新中) Leetcode problems classified by company 题目按公司分类(Last updated: October 2, 2017) .   Top Interview Questions # Title Difficulty Acceptance 1 Two Sum Medium 17.70% 2 Add Two N…