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Yelp online test 题目及答案

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hotIce 发表于 2015-3-31 12:09:33 | 显示全部楼层 |阅读模式

2015(1-3月) 码农类 硕士 全职@Yelp - 内推 - 在线笔试 |Passfresh grad应届毕业生

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There are two parts.
1st part is basic CS knowledge(can be found on glassdoor), 2nd part is one
coding question(Reverse Words in a String problem from leetcode)

.鏈枃鍘熷垱鑷1point3acres璁哄潧
1st part questions and answers:
. 鐣欏鐢宠璁哄潧-涓浜╀笁鍒嗗湴#############################################
2. No. of bytes in a 64 bit machine
Number of bytes to code 64 bits?
8


3. What is the value of the unsigned integer in a 32 bit machine? Maximum value of 32 bits unsigned int?
unsigned int        4bytes        0 to 4294967295(2^32 - 1)
two to the power of 32 minus one. visit 1point3acres.com for more.
http://www.tutorialspoint.com/cplusplus/cpp_data_types.htm
. 1point3acres.com/bbs

4. How many bits are required to represent an octal digit?.鏈枃鍘熷垱鑷1point3acres璁哄潧
- Number of digits needed to code an octet?
8 in binary I know an Octet is a unit consisting of eight bits, up to 255.. 1point3acres.com/bbs
    - What if we're in base 8?
3.1point3acres缃
http://stackoverflow.com/questions/19575629/how-many-digits-to-code-an-octet. more info on 1point3acres.com


5. Where can you apply binary search - sorted array or linked list?
sorted array
. 涓浜-涓夊垎-鍦帮紝鐙鍙戝竷

6. Time complexity of binary search.
O(logn)


7. Time complexity of adding a node at the head of the linked list.-google 1point3acres
O(1)

.鏈枃鍘熷垱鑷1point3acres璁哄潧
8. What is the signal number for kill
http://meinit.nl/the-3-most-important-kill-signals-on-the-linux-unix-command-line

鏉ユ簮涓浜.涓夊垎鍦拌鍧.
Most Linux or UNIX users know that there is a kill(1) command to stop processes, but what are the options, what do they mean?


These options are called signals, which can be expressed in either numbers or words. Some known once are "-1" or "-HUP". Also well known is "-9" (aka "-KILL"). 1point 3acres 璁哄潧


9. How would you find a method in a file.
find . -name '*.cpp' | xargs grep XXX
http://unix.stackexchange.com/questions/97488/command-to-highlight-the-occurrence-of-a-method-in-a-file
. 涓浜-涓夊垎-鍦帮紝鐙鍙戝竷
.1point3acres缃
10. How would you find whether a remote computer is online or not
ping IP/domain name


11. How does the domain name map to ip address
http://www.firewall.cx/networking-topics/protocols/domain-name-system-dns.html


DNS is a very popular and well known protocol. It is used for resolving host names and domain names to IP addresses. The fact is that when you type www.firewall.cx the name is translated into an IP address via a number of queries that take place from your PC towards the DNS server. This DNS Query process (and more) is analysed in great depth in the articles that follow.


12. How to select one row of a table in SQL
http://www.codeproject.com/Questions/219741/Select-nth-row-of-a-table-in-sql-server




SQL SELECT TOP Clause
http://stackoverflow.com/questions/16568/how-to-select-the-nth-row-in-a-sql-database-table
http://www.w3schools.com/sql/sql_top.asp


13. Port number for HTTP and protocol used by HTTP
80 TCP/IP ?
http://searchnetworking.techtarget.com/answer/How-are-TCP-IP-and-HTTP-related. 鐣欏鐢宠璁哄潧-涓浜╀笁鍒嗗湴
http://www.firewall.cx/networking-topics/protocols.html


HTTP is an application layer protocol designed within the framework of the Internet Protocol Suite. Its definition presumes an underlying and reliable transport layer protocol,[3] and Transmission Control Protocol (TCP) is commonly used. However HTTP can use unreliable protocols such as the User Datagram Protocol (UDP), for example in Simple Service Discovery Protocol (SSDP).


14. Full form of SSL and what does it do?   
SSL stands for Secure Socket Layer. The protocol's name is now officially TLS but we will continue to use SSL since that's the better known name.
.鐣欏璁哄潧-涓浜-涓夊垎鍦

SSL was designed to permit web browsers and web servers to exchange sensitive information and prevent programs that could view the network traffic from reading the sensitive data.




-number of bit in octal
-some command in linuz(grep, kill)
-some sort complexity(binary)
-adding element to first of linked list
-data base question(outerjoin, left joint,..)
-SSL? TCP?


- 3 adjectives coworkers would use to describe you?
- Why would you want to work at Yelp?


- Port number used by HTTP?
- Protocol underneath HTTP?.1point3acres缃
- Runtime efficiency of searching an element in an array using a binary search algorithm?
- Complexity of adding an element to the head of a linked list?. From 1point 3acres bbs
- Maximum value of 32 bits unsigned int?
- Number of digits needed to code an octet?
    - What if we're in base 8?
- Number of bytes to code 64 bits? 鏉ユ簮涓浜.涓夊垎鍦拌鍧.
- What does SSL stands for and what does it do?
- What is the Linux kill signal?.鏈枃鍘熷垱鑷1point3acres璁哄潧
- Command to highlight the occurrence of a method in a file?
- Would you apply a binary search on a linked list or a sorted array?


- Is an inner join an intersection, a union or something else?
Inner join - An inner join using either of the equivalent queries gives the intersection of the two tables, i.e. the two rows they have in common.. 1point 3acres 璁哄潧
Left outer join - A left outer join will give all rows in A, plus any common rows in B.. 涓浜-涓夊垎-鍦帮紝鐙鍙戝竷
Full outer join - A full outer join will give you the union of A and B, i.e. All the rows in A and all the rows in B. If something in A doesn't have a corresponding datum in B, then the B portion is null, and vice versa.
. from: 1point3acres.com/bbs

http://stackoverflow.com/questions/19267238/what-is-difference-between-inner-join-and-outer-join
http://stackoverflow.com/questions/38549/difference-between-inner-and-outer-joins

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hit_piggy 发表于 2015-4-9 07:26:31 | 显示全部楼层
坑,目前只看到我一个人做v5的,。。。。
回复 支持 0 反对 1

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mm豆 发表于 2015-4-2 09:44:49 | 显示全部楼层
Is this Yelp Technical Questions v1?
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sunnyroom 发表于 2015-4-2 10:01:45 | 显示全部楼层
楼主您好,. 鐗涗汉浜戦泦,涓浜╀笁鍒嗗湴
求yelp内推。
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 楼主| hotIce 发表于 2015-4-2 10:12:52 | 显示全部楼层
sunnyroom 发表于 2015-4-2 10:01. visit 1point3acres.com for more.
楼主您好,.鐣欏璁哄潧-涓浜-涓夊垎鍦
求yelp内推。
. 涓浜-涓夊垎-鍦帮紝鐙鍙戝竷
我是new grad, 也在找工作呢 我面过yelp, 点名挂掉了
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 楼主| hotIce 发表于 2015-4-2 10:13:38 | 显示全部楼层
hotIce 发表于 2015-4-2 10:12
我是new grad, 也在找工作呢 我面过yelp, 点名挂掉了

电面挂掉了
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ffjjcclxxx 发表于 2015-4-3 02:16:07 | 显示全部楼层
LZ 是v1 还是v2啊, 我也刚接到OA 是v2的。
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 楼主| hotIce 发表于 2015-4-3 10:46:31 | 显示全部楼层
ffjjcclxxx 发表于 2015-4-3 02:16
LZ 是v1 还是v2啊, 我也刚接到OA 是v2的。

我的是Yelp Technical Questions v1
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 楼主| hotIce 发表于 2015-4-3 10:47:17 | 显示全部楼层
mm豆 发表于 2015-4-2 09:44. 鐗涗汉浜戦泦,涓浜╀笁鍒嗗湴
Is this Yelp Technical Questions v1?

yes, Yelp Technical Questions v1
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jianixie 发表于 2015-4-4 04:42:09 | 显示全部楼层
谢谢lz,很实用!
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violalove53 发表于 2015-4-9 05:46:17 | 显示全部楼层
汗了。我是v3啊~~OA和Amazon的OA一样么?开摄像头?
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 楼主| hotIce 发表于 2015-4-9 05:53:01 | 显示全部楼层
violalove53 发表于 2015-4-9 05:46
汗了。我是v3啊~~OA和Amazon的OA一样么?开摄像头?

OA 和 Amazon 没有关系 online assessment的简称

有些公司叫online test

没有camera hackerank做题 我的也是zen test 3.. From 1point 3acres bbs
.1point3acres缃
如果你也是做 zen test 3, 论坛里好像有人把题目贴出来了 如果你没找到 可以告诉我你的邮箱 我发给你 我有截图
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 楼主| hotIce 发表于 2015-4-9 05:55:09 | 显示全部楼层
violalove53 发表于 2015-4-9 05:46. 1point 3acres 璁哄潧
汗了。我是v3啊~~OA和Amazon的OA一样么?开摄像头?

不好意思 请无视上个帖子 发错了 和另外一个混淆了
. 1point 3acres 璁哄潧
OA 和 Amazon 没有关系 online assessment的简称 也有些公司叫online test. From 1point 3acres bbs
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violalove53 发表于 2015-4-9 06:30:56 | 显示全部楼层
hotIce 发表于 2015-4-9 05:55
不好意思 请无视上个帖子 发错了 和另外一个混淆了

OA 和 Amazon 没有关系 online assessment的简称  ...

噢噢 不是这个意思哈,我的意思是形式和A家的OA一样么?就是全程开摄像头然后coding有test case的
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violalove53 发表于 2015-4-9 06:32:49 | 显示全部楼层
violalove53 发表于 2015-4-9 06:30
噢噢 不是这个意思哈,我的意思是形式和A家的OA一样么?就是全程开摄像头然后coding有test case的
. 1point3acres.com/bbs
噢噢 不是这个意思哈,我的意思是形式和A家的OA一样么?就是全程开摄像头然后coding有test case的.鏈枃鍘熷垱鑷1point3acres璁哄潧

补充内容 (2015-4-9 06:33):
submit了两次。。。无视之、、、
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 楼主| hotIce 发表于 2015-4-9 06:34:09 | 显示全部楼层
violalove53 发表于 2015-4-9 06:32
噢噢 不是这个意思哈,我的意思是形式和A家的OA一样么?就是全程开摄像头然后coding有test case的

补充 ...

不是 没有camera hackerrank上面做题目
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violalove53 发表于 2015-4-9 07:05:16 | 显示全部楼层
hotIce 发表于 2015-4-9 06:34
鏉ユ簮涓浜.涓夊垎鍦拌鍧. 不是 没有camera hackerrank上面做题目

好的,十分感谢~看来之后的skype电面才是重点~
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woshiee123 发表于 2015-5-5 04:46:48 | 显示全部楼层
ffjjcclxxx 发表于 2015-4-3 02:16
LZ 是v1 还是v2啊, 我也刚接到OA 是v2的。

路飞! 求问v2是什么题目
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chendanlan 发表于 2015-5-6 05:27:54 | 显示全部楼层
请问有v2吗
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woshiee123 发表于 2015-5-8 05:03:56 | 显示全部楼层
chendanlan 发表于 2015-5-6 05:27. from: 1point3acres.com/bbs
请问有v2吗
鏉ユ簮涓浜.涓夊垎鍦拌鍧.
我也想知道v2 是什么
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