原创 sql - group & having example
problem: there is table store course score of students, now write a sql to query student who has at least 2 course
2020-05-31 13:43:47
原创 find palindromic-prime in pi
find palindromic-prime in pi question: find the first 7-digit palindromic prime found in consecutive digits o
2020-05-31 13:43:37
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原创 link archor
link archor http://www.xxx.com/me.html#mood, this is a link with a archor, #mood, is the archor part, could be the
2020-02-22 21:31:04
1
原创 colleges
colleges ------ stanford master apply requirements: * TOFEL 600+ * GRE 1250 * education GPA 3.3 * * work ex
2020-02-22 21:31:04
原创 js logic operator
logical expression of js && ,||, ! operand: the 3 operator all accept any values as operand, return value: &&
2020-02-22 21:31:04
原创 js closure
js closure scope: in js, inner function has access to params/local variable of the outer function, closure: var
2020-02-22 21:31:04
原创 js array methods
js array method array has some build-in method, to manipulate array, ------ join join array elements and return
2020-02-22 21:31:04
原创 火車票 網上訂票 經驗
火車票 網上訂票 經驗 (以下經驗是 2012年春節前, 在深圳的經驗, 其他時間/地點 不保證適用,具體參見訂票網站的信息和Google) 網站: http://www.12306.cn/mormhweb/ 操作系統:
2020-02-22 21:31:04
原创 modify file name util - python
modify file name util - python a util script to modify file/folder name recusively, written in python, on ubuntu syst
2020-02-22 21:31:04
2
原创 (轉) IP, TCP, and HTTP
(轉自:) http://www.objc.io/issue-10/ip-tcp-http.html When an app communicates with a server, more often than not, tha
2018-09-13 05:45:54
2
原创 java: lib & classpath
classpath, is the path to search for third-part or user-defined classes,refer to:* linux docs.oracle.com/javase/6/do
2018-09-13 05:45:53
2
原创 Scan classes with specified annotation under specified package
Scan classes with specified annotation under specified package. steps: * define annotation * use annotation on class
2018-09-13 05:45:53
4
原创 change encoding of folder recusively
use shell to change encodeing of files under a folder recusively, the script use a tool called "enca", install it if n
2018-09-13 05:45:53
原创 http - simple server & client
Simple http server & client implementation by pure j2se. http - client: package eric.j2se.net.http; import java.io.
2018-09-13 05:45:53
原创 lucene - demo
demo - location: * download lucene there is a "demo" folder, it include a war file, * downloa
2018-09-13 05:45:53