M**A 发帖数: 78 | 1 各位朋友,
请教如下概率题, 不胜感谢.
There are W wavelengths. Each wavelength is divided into T timeslots. The
probability that a time slot is not free is p. A route has H hops.
What is the probability that no wavelength has at least k timeslots free along
the route?
背景知识:
数据包从"源点"出发, 路经H个"hops", 才抵达"终点". 每个"hop"有 W 个 wavelengths, 每
个wavelength 有 T 个 timeslots. 每个数据包路经"hop"的时候只占有一个wavelength的一
个timeslot. |
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h****p 发帖数: 87 | 2 常见就略去了
1) 不能再常见的题了,判断是否是BST 很简单 我用了递归的版本 然后接着问What
if the most left leaf value equal Integer.MIN_VALUE?
2) 数组(任意数组)find break point使得两边子数组(子数组必须至少有一个
element)sum的差最大 followup: 如
果找2个break point呢(假设2个点把数组分成3个子数组的sum是A,B,C 差异就是|A-B|
+|B-C|+|C-A| )?使得三个子数组差异最大。。。然后是n的情况。。。后面卡住了没
找出规律。
3) interval的变形 给定很多的timeslots有开始时间和结束时间 让你返回所有有
冲突的timeslot
大家可以写一下交流交流 |
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a**********0 发帖数: 84 | 3 首先amazon onsite给挂了。。。~~~~(>_<)~~~~
第一题:
给出一堆人,然后你知道他们每个人的meeting shedule,返回所有人前三个共同的
meeting schedule
假设已经知道的方法:public List getSchedule(String person){}
自己要完成的方法:public ArrayList getFirstThreeCommonSlot(List<
String>people){}
请问这题咋做啊。。。 |
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s*****3 发帖数: 87 | 4 上周面了amazon, 今天hr打电话说面试过了,但是要在湾区找到有openning的组收留
才行。我估计是因为有一轮面的不行,而原本面的职位需要有更多经验的人,所以只能
另外找有openning的组。因为不想relocate到seattle去,所以在板上求有没有在湾区
amzn的兄弟推荐。
面经:
老印1(因该是hiring manager):getMySecretNumber(int maxTries); binary
search,比较容易,跑testcase时纠正了老印很多基本错误
老钟1: 一开始问了graph deep copy, 还没开始答就问我以前有没有做过;老实问答
说以前做过;于是换了一道;然后,然后就悲剧了,答得不好(主要不开心的地方是我
还没想好算法,就催着写code,心里有点不爽)
老印2: List getFreeSlots(List busySlots), 跟leetcode题很
像,也很容易过了
老钟2: system design,没法衡量是好是坏 |
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b*****d 发帖数: 61690 | 5 Fox's Sean Hannity topped MSNBC's Rachel Maddow in the first 9 p.m. EST head
-to-head matchup between the two cable news heavyweights on Monday night.
According to Nielsen Media Research, the conservative Hannity delivered 3.3
million total viewers and 666,000 in the 25-54 demographic advertisers covet
most, making the program the most watched in all of basic cable.
Maddow brought in 2.7 million total viewers and 591,000 viewers in the
demographic to finish second in the timeslot. CNN’s "Anderso... 阅读全帖 |
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z*****i 发帖数: 389 | 6 【 以下文字转载自 Mathematics 讨论区 】
发信人: zanetti (篮黑), 信区: Mathematics
标 题: 咨询关于AMS annual meeting上和Search Committee 见面的问题
发信站: BBS 未名空间站 (Mon Nov 29 21:58:31 2010, 美东)
各位大牛好,
今天收到一个貌似还不错的学校的小秘给我发的信,说
Search Committee will be attending the AMS meeting from January 6-9, 2011,
New Orleans, LA. As such, please let us know if you’ll be attending the
meeting and the suitable dates/timeslots, so that we may proceed with
further arrangements.
今年我没有打算去AMS meeting. 如果我回信给search committee说我不去AMS meeting
, 他们是不是就... 阅读全帖 |
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l**********s 发帖数: 47 | 7 我上次面了20分钟的skype,感觉问了好多东西啊
关于时间你可以参考一下他开始给你的选择,比方他给了你10个timeslot,那大概就有
10个左右的candidate,等最后一个时间过了,再过几天应该就有onsite消息了 |
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j****s 发帖数: 881 | 8 do you have any other supervisors at different timeslots? |
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c**********9 发帖数: 12 | 9 把所有timeslot 按开始时间排序, 然后从最左边走一遍,记一个人数count, 每次遇
到开始点count+1,结束点count-1,当count==总人数的时候就找到一个所求的共同
scheduel,一直走直到找到3个。 |
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b******e 发帖数: 5547 | 10 家附近全满
All timeslots for this store are at capacity. |
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W***n 发帖数: 11530 | 11 Flash Crash of the Pound Baffles Traders With Algorithms Being Blamed
by Hiroko Komiya
October 6, 2016 — 6:27 PM CDT
Updated on October 6, 2016 — 7:33 PM CDT
British one pound coins stand stacked near the printed face of Queen
Elizabeth II on a five pound banknote in this arranged photograph taken in
London, U.K., on Thursday, Jan. 2, 2014. The pound was the strongest
performer among a gauge of 10 developed-nation currencies in the second half
of 2013 as improved economic data boosted bets th... 阅读全帖 |
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发帖数: 1 | 12 Source: Fragomen Global LLP & Affiliates
Update - Employment-Based Adjustment Interviews: What Foreign Nationals Need
to Know
December 14, 2017
Executive Summary
Personal interviews for employment-based adjustment applicants began on
October 1, 2017 for those whose cases were filed on or after March 6, 2017.
Adjustment applicants who are called for an interview should be prepared to
answer questions about their background, employment and qualifications and
to provide application documentation if... 阅读全帖 |
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g*******e 发帖数: 4737 | 13 组委会明确规定了你要提前补赛必须通知组委会。
组委会为你补赛提供了3个timeslot。只要你确定下来,一定会让你补。
你要是确定7:30补赛,组委会也一定会提前来开门。
可惜你没有通知组委会。
你和组委会的通信记录全在网上。可以自己查看。
我可以负责任地告诉你,组委会一直在焦急等待你的通知。
3 |
|
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l*r 发帖数: 79569 | 15 因为我们timeshare啊。。。当然这个timeslot比较短,一般人类发觉不了 |
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g***l 发帖数: 18555 | 16 Buy是个动词,怎么能做TABLE名字呢,他那个DATE,START END TIME好像是电影放映日
,开始时间,结束时间,是可以的。不过PROJECTION和TIMESLOT是什么关系,放映本身
就是个时间+MOVIE+EMPLOYEE,是不是重复的?什么EMPLOYEE MANAGE EMPLOYEE,就是
MANAGEMENT就可以了。这个中文意思先搞清楚,各种关系用中文列一下吧,不论不类的
,关系也很乱。 |
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x*********n 发帖数: 28013 | 17 今天config 2个PRI,出来一条message:Current dsp resources can support 13
timeslots;need 3 extra dsps to support the requested configuration
我的slot里面已经放了3条了,不知道为啥还不够。 |
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z*****n 发帖数: 7639 | 18 嗯,不记得作者和文章了。不过我们可以从802.11
throughput分析的文章里面间接得到答案。
只要看看average interframe timeslot number vs. node
number 就可以得出大概的结论。理想情况下,frame burst
模式可以eliminate这些waste。 |
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z*****n 发帖数: 7639 | 19 No, they are different.
802.11 PCF uses a polling mechanism in Contention-free period,
for different user nodes, the polling priority is different
so such a priority sequence can be roughly regarded as
throughput control.
802.16 is to dynamically allocate timeslot numbers for
different user nodes. |
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b******s 发帖数: 10 | 20 GSM 就好比社会主义. 用户没啥自由度,系统整体效率不高,但非常实用。每个用户所
能得到的资源有
自己的限额(a timeslot, 200kHz), 好比70,80年代每人每月半斤油,一斤猪肉.
CDMA要是没有功控的话,就是自由市场主导的资本主义。资源看上去是大家共享的,但
是得竞争。那些
有最高"power"的用户可以得到更好的服务,而且可能抢占甚至阻塞其他用户。功控就
好比法律和游戏
规则,大家都遵守的话,系统效率比GSM要高不少。但是总体来说,因为用户不是正交
的,资源还是得竞
争。
OFDMA就是共产主义啦:D 因为正交,所以人们不在有利益冲突。当然GSM用户间也没干
扰,但OFDMA
比GSM效率高。资源(RB)总是被分配给能最有效利用它的人(好比Frequency selective
scheduling). 还有重要的一点就是资源很充足(20MHz +).
欢迎大家补充啊。 |
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z*****i 发帖数: 389 | 21 各位大牛好,
今天收到一个貌似还不错的学校的小秘给我发的信,说
Search Committee will be attending the AMS meeting from January 6-9, 2011,
New Orleans, LA. As such, please let us know if you’ll be attending the
meeting and the suitable dates/timeslots, so that we may proceed with
further arrangements.
今年我没有打算去AMS meeting. 如果我回信给search committee说我不去AMS meeting
, 他们是不是就立马不考虑我的申请了? 还是如果他们对我仍然感兴趣,会通过别的方
法(比如打电话)和我聊聊?
请大牛指点一二. 谢谢 |
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d****y 发帖数: 2180 | 22 I think first we need to set up regular meetings for all of us.
Meet every day (or every other day) for half an hour or an hour.
Find a good timeslot that works for everybody.
Then we can discuss in the Skype group.
I like QQ group better though. I used that to be able to connect with
friends in the web game but now find out it's a really great tool. |
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