java coding interview questions and answers

From: http://topic.csdn.net/u/20070315/10/78d03595-b5fa-4853-ab02-37ed16c2ddb3.html Answers to the first group: 1) three ropes, the first ignition, the second ignition, and the third ignition After the first rope is burned (30 minutes), the other end of the second rope is ignited. After the second rope is burned (45 minutes), the two ends of the third rope are ignited, timing is complete after the third rope is burned (1 hour 15 minutes) 2) According

One of Google's interview questions: there are eight balls of the same size, 7 of which are of the same weight, with a slightly heavier one. How can I use the balance to determine which ball is heavier only twice? Answer:For the first time, I took out 6 of them and placed them on the balance, each weighing 3. I can determine where the heavier one is. There are three situations: 3 on the left of the balance

20 Linux Command Interview Questions and answersQ: 1. How can I view the running level of the current Linux server? A: the who-r and runlevel commands can be used to view the running level of the current Linux server.Running level:0-downtime (do not set initdefault to 0) 1-Single User Mode 2-multiple users, but there is no NFS3-full multi-user mode 4-5-X116-Restart not used (do not set initdefault to 6) Q:

1. Use PHP to print the previous day in the format of 22:21:21 Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->// Echo date ('Y-m-d H: I: s', time ()-60*60*24Echo date ("Y: m: d H: I: s", strtotime ("-1 day "));?>2. Differences between echo (), print (), and print_r ()ECHO is a language structure with no returned values;The print function is basically the same as the ECHO function. The difference is that print is a function with a return valu

is a function and has a return value. print_r is a recursive print that outputs array objects. 3. templates that can be used to split HTML and PHP So much, in fact, PHP itself is a template engine, I used smarty, common also PHPLib, FastTemplate, Savant here has a template engine list: http://www.sitepoint.com/forums/showthread.php? T = 123769 4. How to Implement PHP and JSP interaction? The question is a bit vague. SOAP, XML_RPC, Socket function, and CURL can all achieve this. If PHP and

Typical questions and answers from Oracle 1. Explanations of differences between cold backup and hot backup and their respective advantages answer: Hot Backup is applicable to databases in archive mode when the database is still working. Cold backup refers to the backup after the database is closed, applicable to all databases. The advantage of hot backup is that the database can still be used during Backup

Interview Questions (1 ):Connect n numbers to obtain the smallest or Largest Integer (Baidu exam) Description: There are n positive integers connected into a row to form a minimum integer.Program input: N countProgram output: Multi-digit join For example:When n = 2, the minimum integer connected by two integers 32,321 is: 32132,When N = 4, the minimum integer of the four integers, namely, 55, 31, 312, and

This interview questions2344095 (caring)SortAshzs (can contain Chinese characters ))Thank you! 1. There are 14 200 GB disks on the ark, and the database size includes log files. How to set the disk (which indicates how the 14 disks are used )?2. there are two Server Clusters, node1 and node2. Now we need to install win200 system patches. After the patches are completed, we need to restart the system. How to install the patches does not affect the user

Recently I saw an interview question from an innovative factory, which is very interesting. The following shows the Algorithm Implementation (Java code ). If you have a better algorithm, follow the instructions. ABCDE five-member fishing and sleep. A wakes up, throws one fish, divides the remaining fish into five points, and takes one copy. B wakes up and throws one, divide the remaining parts into five po

Document directory How does hibernate work and why? How does hibernate delay loading? In hibernate, how does one implement the relationship between classes? (For example, one-to-many and many-to-many relationships) Let's talk about the cache mechanism of hibernate. Hibernate query method How to optimize hibernate? Struts working mechanism? Why use struts? How is the struts validate framework verified? Let's talk about the struts design model. Why does spring work? How does hibernat

How does hibernate work and why?Principle:1. Read and parse the configuration file2. Read and parse the ing information and create sessionfactory3. Open sesssion4. Create transaction Transation5. Persistent operations6. Submit the transaction7. Disable session8. Disable sesstionfactory Why:1. The code for JDBC database access is encapsulated, which greatly simplifies the tedious and repetitive code at the data access layer. 2. Hibernate is a mainstream persistence framework based on JDBC and an

Java interview questions, Java interview questionsInterview is something that everyone has to go through. Most people have more than one interview. Here we will summarize the latest interview