找规律题,最终可以简化为一个式子 How Many Points of Intersection? We have two rows. There are a dots on the top row and b dots on the bottom row. We draw line segments connecting every dot on the top ro
Question: Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. 求二维坐标中,最多共线的点数 Algorithm 遍历每个点,找到斜率一样的点,用哈希表存储大小 注意: 相同的点单独计算 在同一竖线上斜率无穷大,可以记为INT_MAX
Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. 解题思路 若两个点共线,则有如下情况: 两个点重合两个点的x坐标相同(斜率无穷大)两个点的斜率相同 y1 = k * x1 + b; y2 = k * x2 + b; 则有k = (y1 -
C. Blocked Points 题意:A点和B点是4-connected,的条件是 the Euclidean distance between A and B is one unit and neither A nor B is blocked; or there is some integral point C, such that A is 4-connected with C,
B. Fixed Points time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output A permutation of length n is an integer sequence such t
‘tools.jar’seems to be not in Studio classpath Please ensure JAVA_HOME points to JDK rather than JRE 今天第一天上班 ,公司配了台笔记本来工作(屌丝一枚,穷啊,还没钱买新的,自己老牌笔记本性能跟不上),首要工作当然是装开发要用的各种软件,在安装Android Studio时遇到了一个问题: ‘t
Given n points on a 2D plane, find the maximum number of points that lie on the same straight line. 本题有点戏剧性,在本地测试代码的时候,答案并不正确,经过很长时间反复排查逻辑后最后,硬着头皮提交竟然AC了,本来还以为是我GCC-C++版本浮点型计算的精度问题,最后才发现是自己写的Po
链接:http://poj.org/problem?id=1329 题目: Circle Through Three Points Time Limit: 1000MS Memory Limit: 10000KTotal Submissions: 3176 Accepted: 1347 Description Your team is to write a progra
This way 题意: 给你n个数,让他们两两配对,要求每个数最多只有一个数与它匹配,并且两个数的差>=z,问你最大有多少对数可以匹配 题解: 非常敢单,但是有一些细节问题要注意一下。 首先我是先排序,再用lower_bound来做,但是lower_bound的时候要注意每个数只能找后半部分的数,因为找前面的数会出现一个问题:假设有1,10,15,20这四个数,z是9,那么如果lower