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Bulb
leetcode(力扣) 319. 灯泡开关 (暴力模拟) (数学推论)
题目在这:https://leetcode-cn.com/problems/
bulb
-switcher/法一(暴力):这道题题目描述的就很清楚,由于第一轮和第二轮都是固定的,所以可以直接从第三轮开始,n
深度不学习!!
·
2023-11-29 09:53
个人笔记
交流学习
leetcode
python
Light a
Bulb
LightaBulb"isathrillingandfunpuzzlegamewhereplayersneedtocleverlyoperatetolightupelectriclightsandcatchthieves.Inthegame,playersneedtousedifferentanglestolaunchrockets,andthroughphysicalprinciplessuch
Goblinsd
·
2023-11-21 22:24
matplotlib
Bulb
Switcher(规律题)
1.ProblemDescriptionTherearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheith
dancinglikelink
·
2023-11-10 05:22
leetcode
智商题
规律题
leetcode
UWP 开发初阶 Chapter 2 - 简单的 XAML 基础容器与控件介绍
的一些基本容器与控件:sunglasses:熟悉HTML的朋友看到XAML的语法应该会很亲切,因为XAML也使用tag的形式,如下(先看一下形式,不用去理解)#(稽滑)XAML:Todo或上面两种形式都是正确的:
bulb
TotoroQ
·
2023-10-31 23:39
Bulb
Switcher
DescriptionTherearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs,thenyouturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit’sofforturningoffifit’son).Fortheithround,yout
KpLn_HJL
·
2023-10-20 06:31
OJ题目记录
leetcode
算法
职场和发展
LeetCode刷题实战319:灯泡开关
今天和大家聊的问题叫做灯泡开关,我们先来看题面:https://leetcode-cn.com/problems/
bulb
-switcher/Therearenbulbsthatareinitiallyoff.Yo
程序IT圈
·
2023-10-08 18:01
算法导论
字节跳动
tags
im
线性代数
LeetCode 319. 灯泡开关
1、题目319.灯泡开关-力扣(LeetCode)https://leetcode-cn.com/problems/
bulb
-switcher/submissions/2、题解这道题第一个便是扎扎实实的暴力法
风卷晨沙
·
2023-09-04 02:02
LeetCode精选TOP面试题(中等2)
cheapest-flights-within-k-stops/)(bellman-ford最短路)(bellman-ford最短路-空间优化)[319.灯泡开关](https://leetcode-cn.com/problems/
bulb
-switcher
_light_house_
·
2022-08-20 22:20
LeetCode
面试题
leetcode
算法
职场和发展
推荐英国一家
bulb
电气能源公司,又友好又便宜!
在网上做了很多比较后,找到一家tariff最低的可再生新能源公司
Bulb
,它家就只有一种价格,比其他家低15%,没有Exitfee,还可返还原能源公司的exitfees!!
小姐姐说的对
·
2021-06-23 13:05
LeetCode #319
Bulb
Switcher 灯泡开关
319BulbSwitcher灯泡开关Description:Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son
air_melt
·
2021-05-18 20:09
Bulb
Switch
我觉得这题好扯啊。。。根本就测试不出面试者的水平。。。一个灯泡最后亮只有可能是因为开关被用了oddnumbertimes。第i个灯泡开关会被处罚在第d轮只有当ddividesi。所以灯泡最后亮着只能是有一个oddnumberofdivisors.所以灯泡endsupon只有当i是一个square。所以就是countthesquarenumbers.sqrtgivesyoutherootofthel
98Future
·
2021-05-04 23:52
Bulb
Switcher
Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Forthenthround,youonlytogglet
dianxiangong2403
·
2020-09-17 11:57
zoj 3203 Light
Bulb
三分,求凸函数的最大值
题目来源:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=3366分析:求影子最长。当人从灯往墙走距离x,当x0=D*(H-h)/H时,x(0.x0)一直递增。当D>x>x0影子函数为f(x)=-x+(D*h-D*H)/x+D+H为一个凸函数。在此区间用三分,求最大值。代码如下:constdoubleEPS=1e-9;doubl
weixin_34210740
·
2020-08-25 05:28
[Leetcode]
Bulb
Switcher
BulbSwitcherTotalAccepted:970TotalSubmissions:2597Difficulty:MediumTherearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(tu
东方花未开
·
2020-08-23 09:25
算法
Bulb
Switcher
题目来源给一个n,有n个灯泡,第一次每个都打开,第二次每隔一个触发开关,第三次每隔两个触发开关,直到第n次,最后还剩多少个开着的。我一开始想的是n^2的做法,然后超时了。之后稍微改进一点点,但是还是超时。classSolution{public:intbulbSwitch(intn){vectorbulbs(n,0);intcnt=0;for(inti=1;i<=n;i++){for(intj=1
我叫胆小我喜欢小心
·
2020-08-22 23:20
TOJ 2814 Light
Bulb
DescriptionComparedtowildleopard'swealthiness,hisbrothermildleopardisratherpoor.Hishouseisnarrowandhehasonlyonelightbulbinhishouse.Everynight,heiswanderinginhisincommodioushouse,thinkingofhowtoearnmor
weixin_30364325
·
2020-08-09 13:02
ZOJ_3203_Light
Bulb
题意:如图,给定H,h,D,求当人总灯泡的正下方走到墙壁的过程中其影子的长度L(地上加墙壁上)的最大值。思路:可以过墙右下角做一条平行于光线的辅助线,设地上影子长度为x,墙壁上为y,并利用三角形相似的关系有:可知该函数是(0,D)上的凸函数,故可用三分法求其最大值。#include#include#include#include#include#include#include#include#in
Southan97
·
2020-08-08 13:18
LeetCode_319灯泡开关
来源:力扣(LeetCode)链接:https://leetcode-cn.com/problems/
bulb
-switcher著作权归领扣网络所有。商业
皓月v
·
2020-08-07 16:44
LeetCode题解
第八章 高级UI组件
android:scaleType="fixXY"----设置图片的缩放规则横纵占满整个组件//scale比例nandroid:src="@drawable/
bulb
_off"----添加图片资源在代码中通过
weixin_30333885
·
2020-07-30 02:29
移动开发
ui
java
LeetCode1529 灯泡开关IV
https://leetcode-cn.com/problems/
bulb
-switcher-iv/房间中有n个灯泡,编号从0到n-1,自左向右排成一行。最开始的时候,所有的灯泡都是关着的。
syncdoodle
·
2020-07-29 10:11
Code
LeetCode contest 199 灯泡开关 IV
Bulb
Switcher IV
TableofContents一、中文版二、英文版三、Myanswer四、解题报告一、中文版房间中有n个灯泡,编号从0到n-1,自左向右排成一行。最开始的时候,所有的灯泡都是关着的。请你设法使得灯泡的开关状态和target描述的状态一致,其中target[i]等于1第i个灯泡是开着的,等于0意味着第i个灯是关着的。有一个开关可以用于翻转灯泡的状态,翻转操作定义如下:选择当前配置下的任意一个灯泡(下
程序媛三妹
·
2020-07-29 06:02
LeetCode\
LintCode
每周一题坑男友系列
Bulb
Switcher
2017年8月9日23:03:14Description:Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).
dfeanl4974
·
2020-07-14 09:30
利用JS实现开灯关灯
方式一.functionon(){varimg=document.getElementById("light");img.src="image/
bulb
_on.png";}functionoff(){varimg
少年闰土01
·
2020-07-11 21:55
javascript
Bulb
Switcher
题目找规律constintMAXN=2e5;classSolution{public:longlongsquare[MAXN];intpos=0;intbulbSwitch(intn){for(longlongi=1;iINT_MAX)break;square[++pos]=i*i;}intl=1;intr=pos;while(lsquare[mid]){l=mid+1;}elseif(n
Shendu.CC
·
2020-07-09 15:00
LeetCode 319:
Bulb
Switcher (Python3)
题目Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtoggleeve
KRummy
·
2020-07-09 13:47
Bulb
Switcher
这种数学题最好纸上画画找找规律,光靠想是想不出的。这题如果用O(n2)的程序模拟过程会tle,而且也不会是MEDIUM题了。事实是,对于6,会在1,2,3,6分别打开和关闭;那对于4,只会在1,2,4打开和关闭。所以完全平方数的灯泡最后才会被toggle奇数次。publicintbulbSwitch(intn){return(int)Math.sqrt(n);}据说是GRE数学题。
DrunkPian0
·
2020-07-04 21:19
319. 灯泡开关
题目(https://leetcode-cn.com/problems/
bulb
-switcher/)初始时有n个灯泡关闭。第1轮,你打开所有的灯泡。第2轮,每两个灯泡你关闭一次。
Mastergad
·
2020-06-30 18:58
还在写CURD?试试这款基于mybatis-plus的springboot代码生成器
文章目录⚡Introduction✔️Release:star:Features:point_right:QuickStart:
bulb
:Examples1.Controller模板代码示例2.Service
Yuchao Huang
·
2020-06-29 07:22
工具资源
Bulb
Switcher
Problem:Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtog
aemaeth
·
2020-06-23 00:49
Bulb
Switcher
题目Thereisaroomwithnlightswhichareturnedoninitiallyand4buttonsonthewall.Afterperformingexactlymunknownoperationstowardsbuttons,youneedtoreturnhowmanydifferentkindsofstatusofthenlightscouldbe.Supposenli
BLUE_fdf9
·
2020-06-22 06:38
Av、Tv、M、P、B
B:门全称是
Bulb
,意思是按快门键多久,快门就打开多久,有的相机有,有的相机没有,佳能800D就没有AUTO:全自动P:是Program,程序自动,和AUTO全自动区别在于,全自动状态下光圈和快门都不能手工干预
w_nanan
·
2020-03-30 20:11
如何安装日光灯?
ballast:镇流器starter:启动器tubesocket:电子管座
bulb
:电灯fixturebase:夹具底座镇流器是调节通过管的电流的电磁线圈。当起动器打开时,
慢慢行走的玄子
·
2020-03-25 00:21
疯狂的Python-10(is not ...` 并不是 `is (not ...)`)
>>>'something'isnotNoneTrue>>>'something'is(notNone)False:
bulb
:解释isnot是一个单独的二元运算符,和分开使用的is和not作用是不同的。
景行_白色极限
·
2020-03-10 09:25
Bulb
Switcher
问题:Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtoggleev
Cloudox_
·
2020-03-03 07:13
Bulb
Switcher
题目大意BulbSwitcherTherearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithroun
默写年华Antifragile
·
2020-02-26 14:11
Bulb
Switcher
Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtoggleevery
Jeanz
·
2020-02-24 01:15
319
Bulb
Switcher
Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtoggleevery
Shiyi001
·
2020-02-23 12:55
LeetCode-319~
Bulb
Switcher灯泡开关
Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtoggleevery
NapoleonY
·
2020-02-21 11:39
Bulb
Switcher
Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtoggleevery
Eazow
·
2020-02-19 20:32
星轨、镜面湖水到底是怎么拍摄的?相机这个功能很神奇不用可惜了
相机上的拍摄模式可以分为三大类,全自动拍摄模式、半自动/手动模式和场景拍摄模式,而B门(
BuLb
)也称为手控快门,可以看作是手动模式的一种延伸。相机调节到B门模式,
单反摄影控
·
2020-02-18 05:10
Bulb
Switcher II
原题:672.BulbSwitcherIIThereisaroomwithnlightswhichareturnedoninitiallyand4buttonsonthewall.Afterperformingexactlymunknownoperationstowardsbuttons,youneedtoreturnhowmanydifferentkindsofstatusofthenlight
默写年华Antifragile
·
2020-02-17 22:15
Bulb
Switcher II
这道题看上去很吓人。但是观察发现由于操作时总是几个灯泡一起操作,所以必然有不少灯泡的状态是锁定的。最多只有6个状态独立的灯泡。所以n可以转换成min(n,6)然后对于同一个操作,执行0次和2次效果是一样的,执行1次和3次效果是一样的。而且不同操作之间是可以互换的。所以他们是相互独立的而且没有先后顺序的。有四种操作,每种操作执行0次或者一次。我们可以用bfs从0出发看一共有多少种状态。最后会遇到一个
尚无花名
·
2020-02-10 15:11
玩转 Markdown 所有特性
语法:#一级标题##二级标题###三级标题####四级标题#####五级标题######六级标题文本样式:
bulb
:粗体、斜体、删除线可以混合使用。
静默虚空
·
2020-02-06 05:46
Bulb
Switcher
Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtoggleevery
刘宇轩Freeman
·
2020-02-06 00:55
Bulb
Switcher
问题描述Therearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Fortheithround,youtogglee
codingXue
·
2019-12-28 01:51
疯狂的Python-13(纠结的not)
目录大纲▶纠结的notx=Truey=FalseOutput:>>>notx==yTrue>>>x==notyFile"",line1x==noty^SyntaxError:invalidsyntax:
bulb
景行_白色极限
·
2019-12-24 14:31
Leetcode -
Bulb
Switcher
Mycode:publicclassSolution{publicintbulbSwitch(intn){return(int)Math.sqrt(n);}}reference:https://discuss.leetcode.com/topic/39558/share-my-o-1-solution-with-explanation没什么意思,数学题。Anyway,Goodluck,Richar
Richardo92
·
2019-12-18 00:30
LeetCode319. 灯泡开关
1、题目链接https://leetcode-cn.com/problems/
bulb
-switcher/2、解题思路这道题的意思是有N个灯泡,初始状态是熄灭的,第1次让你每个灯泡都切换一下状态(熄灭的就打开
24K纯帅豆
·
2019-12-07 18:23
学习摄影必需知道的专业术语集
B门相机的快门速度可以根据您的需要长时间开启的功能,在拍摄烟火或者需要长时间曝光的时候使用,英文为
Bulb
。F值光圈值。
大喵小鑫
·
2019-11-27 23:47
Bulb
Switcher
DescriptionTherearenbulbsthatareinitiallyoff.Youfirstturnonallthebulbs.Then,youturnoffeverysecondbulb.Onthethirdround,youtoggleeverythirdbulb(turningonifit'sofforturningoffifit'son).Forthei-thround,yo
何睿
·
2019-02-24 00:00
python3.x
leetcode
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