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Ali 2015 Internship A problem

#include   Ali 2015 Internship A problem

A day to accumulate a bit of Ali pen questions

to write a simple regular, not a complicated one, that's the point, it's going to take some time to learn.Here to borrow the answers of netizensvar reg = /^[a-za-z0-9_-][email protected][a-za-z0-9_-]+ (\.[ a-za-z0-9_-]+) +$/;9.p{*color: #000000;//ie7_color: #ff0000;//ie6Color: #00ff00;}10. varText = document.getElementsByTagName ("input") [0]; Text.addeventlistener ("Focus", Ofocus,false); Text.addeventlistener ("Blur", Oblur,false); functionOfocus () {if( This. value== "Please enter c

Jumping lattice problem--Ali written test

: /** * Project Name: * File Description: * Main Features: * Version number: 1.0 * Producer: LCX * creation time: 2015-8-25 **//** * @author LCX * */public class Pacetest {static random rand=new random ();p ublic static int pace () {return (int) (rand.nextdouble () *2+1);} public static void Main (string[] args) {Double sum=0;int times=10000;//experiment 10,000 times for (int i=0;i cross-examine 1, if the subject is starting from 2, then what is expected? same method: st

The problem of the probability of getting off work--Ali pen test

a cow and a program ape Xiao Yang every day to pick up his wife home from work. Xiao Yang at 6 o'clock on time from the company to start the car, due to possible traffic jams on the road, Xiao Yang to the wife of the company at the door of the time points evenly distributed between 6 points 20 to 6 points 30. Wife according to Xiao Yang's time to do estimates, to the company at the gate of the time points evenly distributed between 6 points 25 to 6 points 30, if the small Yang Bi wife arrived at

Read < Ali billion-level daily life Gateway Channel Architecture Evolution > Thoughts

Read Among the optimizations:The optimization method is more common, 3,4 I know less, very interested. Keep Tracking down:So went online search ECDH and Session-ticket and Slight-ssl, which Slight-ssl is Ali self-built a set of technology. The ECDH:ECC algorithm is used in conjunction with DH for key negotiation, a key exchange algorithm called ECDH. The exchange parties can negotiate a key without sharing any secrets.Session-ticket: In session ticket

"BZOJ2434" "NOI2011" Ali typewriter AC automatic machine

Reprint please specify the source 233:http://blog.csdn.net/vmurder/article/details/42875307This is a divine question.First we need to build an AC automaton and then build a fail tree, and then we findIf a string is asked to appear in the string B several times, then only need to look at the string B in the AC automaton all nodes in the number of nodes, in the end of a string in the tree of the fail trees can be.And that would be fine, but still not AC,Then we just need to follow the DFS sequence

Talk about Ali Incremental Computing framework Galaxy: Incremental Computing Model (II)

indicates whether the data from the Zoo or the right stream, the column of the flow can be inconsistent, the subsequent can be linked to the aggregation of the batch or cross-batch operations. Mix () is an interface specifically designed for aggregate operations.Functionally, the operator layer can be analogous to the spark RDD. Spark RDD has two core values: one, at the API level, to circumvent the abstraction and uncomfortable native interfaces of the MapReduce model, providing a variety of t

IP tunnel--Realize Ali intranet server can access the extranet ~

There are two of Ali's services, one A has assigned an extranet IP, and the other B does not, how to let B with a to achieve the Internet?Handled as followsOn Server AIP tunnel Add i2o mode IPIP remote B local A---here A, B are intranet addressesIfconfig i2o 192.168.2.1 netmask 255.255.255.0On the B serverIP tunnel Add i2o mode Ipip remote a local B---here both A and B are intranet addressesIfconfig i2o 192.168.2.2 netmask 255.255.255.0This completes the IP tunneling between the two servers as w

Ali game Big Data sesson2_rf& GBRT (UP)

. Additional ID columns have to be added to merge Zxs_gbrt_offline_section_two_13_1 and zxs_gbrt_offline_section_two_11_1 two tables to get similar user_id, Brand_id,y_val the table, take the threshold value to recommend it. Append the ID column code to the script provided in Xlab.Also: Attach the script implementation code to facilitate testing:watermark/2/text/ahr0cdovl2jsb2cuy3nkbi5uzxqvdtaxmdy5mtg5oa==/font/5a6l5l2t/fontsize/400/fill/i0jbqkfcma==/ Dissolve/70/gravity/southeast ">-----------_

! HDU 4101 Ali and baba-game-(Bfs&dfs scan two-dimensional points)

Test instructions: The goal is to get a value of 1 of the gem, but the premise is to have a two-dimensional lattice from the outside to the gem of the path, if there is no need to choose a stone at a time to reduce its value by 1, until the stone value of 0 becomes the pathway, the premise of the choice of this stone is also a lattice outside to the Two people take turns, each time choose a stone, a starts first, asks by the input condition, who can win.Analysis:Game problem, the two people will

Ali 2-way front-end pen test + sugar 2-way front-end pen questions

Ali front-End pen questions1, a table HTML code is as followsWhen the user presses the Delete button and deletes the row (TR) that is pressed, use native JavaScript implementations.2. Background:1. Object A directly invokes a method of object B to implement interactive logic. But the problem is that A and B are tightly coupled, and modifying B may invalidate the method of a call B.2. In order to solve the problem caused by coupling, we can design:Obje

Ali additional problem distributed RPC request disorderly sequence

RPC requests in distributed systems often occur in a disorderly sequence.Write an algorithm to order a sequence of sequential output. For example , suppose the starting sequence number is 1, for (1, 2, 5, 8, ten, 4, 3, 6, 9, 7) This sequence, the output is :123, 4, 567, 8, 9, 10??In the above example, when3 arrives, 4,5 is already there. The entire sequence (3, 4, 5) that already satisfies the order is therefore output to one line.??Requirements:1. write an efficient algorithm to complete the ab

ALi ct f 2015 write up

ALi ct f 2015 write up 0x00 CakeCake is an Android question. The specific process is to input a string, initialize an array with a length of 16, and then combine the string with the array xor. So we only need to perform xor again and we will be OK.The Key is to look at the code in reverse order. If there are two keys to find the correct one, you can directly go to the code. a = [0, 3, 13, 19, 85, 5, 15, 78, 22, 7, 7, 68, 14, 5, 15, 42]b = 'bobdylan's

Ali written programming problem--Sort by product number (multilevel sort)

/stat.h, unistd.h, curl/curl.h, process.h Time limit : 1S ( in languages other than C + +: 3 S) memory limit : 128M ( languages other than C + +: 640 M)Input :The data contains 1 lines: The first line: the encoding of all products, separated by commas (half-width) Output :List of sorted commodity barcodes, separated by commas (half-width)Input Example :004hi090,004hi091, 004hz091, 004ky026 Output Example :004ky026,004hz091, 004hi091, 004hi090 1#include 2#include 3#include string.h>4#i

2014 Ali intern face question--the principle of hashing and how HashMap is implemented in Java

overflow zone 2, how HashMap in Java is implemented We can understand it as " array of list ". HashMap is actually implemented as a linear array, so the container that can be understood to store the data is a linear array.So how does a linear array implement key-value pairs to access data? Here HashMap has to do some processing.1. First hashmap inside a static inner class entry is implemented. Its important attributes are key, value, next, from the attribute Key,value we

A brief analysis of the test questions of Ali client engineers--android application of Flash back (crash) analysis

Uncaughtexceptionhandler interface in the following code: Public class Implements Uncaughtexceptionhandler { @Override publicvoid Uncaughtexception (Thread T, Throwable e) { try { // The parameter e that passed in this method is the exception that causes the application crash, we can get the exception information here, can upload the exception information to the server for unified analysis, can also be saved in the file system catch ( Exception e) {

Ali Rap+fiddler CGI data mock-up for app native app-----(ii) Add a mock rule that randomly returns data of type (different length) in 4

# #RAP如何生成json数据 # #1. Add mock rules to the page; direct storage;2, the service obtains the corresponding rule string from the DB, invokes the Mock-min.js parsing, generates the data to return to the service;Mockjsrunner.dorendermockjsrule calls Context.evaluatestring directly executes Mock-min.js, returning the corresponding generated results;3, Service call callback function results returned to the front end;# #RAP如何添加规则 # #To extend the random.extend in Mock-min.js:Random.extend ({/*randomly

Ali 2014 Mobile Security Challenge second question debug note

0x00 PrefaceRecently in learning Android security, see the 52 hack above with an analysis of the 2014 Ali Security Challenge's second Crackme article. Reminds me of my memory, it is my first time to participate in the security game, in the security of Android is not a long-in-depth study. The first question is relatively simple, directly in the logcat inside can see the output of the information, as long as the number and the text of the relationship

Update Ubuntu software source for Ali Cloud

://mirrors.aliyun.com/ubuntu/utopic-security UniverseDEB-SRC Http://mirrors.aliyun.com/ubuntu/utopic-security UniverseDeb Http://mirrors.aliyun.com/ubuntu/utopic-security MultiverseDEB-SRC http://mirrors.aliyun.com/ubuntu/utopic-security Multiverse# # Uncomment the following, lines to add software from Canonical ' s# # ' partner ' repository.# # This software was not part of Ubuntu, but was offered by Canonical and the# # respective vendors as a service to Ubuntu users.# Deb Http://archive.canon

Three architectural models understood by Ali Java Development Engineers

. such as support, dynamic addition/removal of FS, load Balancing of FS, communication between AS and FS, as and IRAs, cross-region service requests, and so on.It is felt that the above architecture design mainly favors the system design of the Java EE aspect, if it is other, such as the design of communication system, it may be different.If you want to learn architecture technology friends can add my QQ group 705194503, which shared my ten years of experience in the practice of programming, inc

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