摘要: Trie樹是一棵度 m ≥ 2 的樹，它的每一層分支不是靠整個關鍵碼的值來確定，而是由關鍵碼的一個分量來確定。  閱讀全文      摘要: For myself learning.
Personal Mastery  閱讀全文      摘要: Have you read Jess In Action by Earnest J. Freedman-Hill? It's one of the better books out there on rule engines, though it does require some experience to get the most out of the book.
A variation on the bookstore could be recommendation engine. That would provide an opportunity to use a rule engine for direct matching on category/subcategory and aggregations.  閱讀全文      摘要: IBM Dump Analyzer for Java是來分析虛擬機穩(wěn)定性的一種可擴展框架。對Java虛擬機生成的產(chǎn)物進行自動診斷。  閱讀全文      摘要: 實在忍受不了sun的做事風格和它的開發(fā)工具了，nb的beta6一踏糊涂一堆bug，唉~想著就想起來sun中國弄個nb插件的比賽不僅過程糟糕，獲獎了居然還不兌現(xiàn)承諾，到現(xiàn)在也杳無音信，估計是證書也不想發(fā)了，真是讓大家對它越發(fā)感到?jīng)]有信心~~~~~~~~~不提這個了，還是講講Europa 和 myeclipse， 最近在寫一個基于規(guī)則的引擎，用的Europa 和myeclipse6 感覺非常舒服，myeclipse的功能也大大加強了比如改進了javaEE5 提高了EJB3開發(fā)效率可以支持從數(shù)據(jù)模型到bean的轉(zhuǎn)換，java的持久化程度及其Spring-JPA的高度集成。開發(fā)ajax的朋友可以發(fā)現(xiàn) myeclipse對ajax的開發(fā)和測試做的也非常好，尤其是對js的調(diào)試。Web開發(fā)的另一個特點是支持RAD web。nb原來喊的一項特色是集成了matisse，在myeclipse目前也集成了它而且對于可視化swing開發(fā)非常方便，當然你也可以自己按照，不直接更新。
myeclipse中集成的derby和tomcat也大大加速了服務器的連接和部署，調(diào)試等。至于db視圖個人使用oracle  閱讀全文      摘要: Given a picture composed entirely of horizontal and vertical line segments, calculate the minimum number of times you must lift your pen to trace every line segment in the picture exactly n times.
Each line segment will be of the form " " (quotes for clarity), representing a segment from (x1,y1) to (x2,y2). Segments may cross each other. Segments may also overlap, in which case you should count the overlapping region as appearing in the drawing only once. For example, say t  閱讀全文

posted @ 2007-10-30 21:36 wqwqwqwqwq 閱讀(1190) | 評論 (0) | 編輯 收藏

Lottery Again

     摘要: In most states, gamblers can choose from a wide variety of different lottery games. The rules of a lottery are defined by two integers (choices and blanks) and two boolean variables (sorted and unique). choices represents the highest valid number that you may use on your lottery ticket. (All integers between 1 and choices, inclusive, are valid and can appear on your ticket.) blanks represents the number of spots on your ticket where numbers can be written.  閱讀全文

posted @ 2007-10-24 21:20 wqwqwqwqwq 閱讀(1208) | 評論 (1) | 編輯 收藏

A Q of Encrypting String

     摘要:
Let's say you have a binary string such as the following:
011100011
One way to encrypt this string is to add to each digit the sum of its adjacent digits. For example, the above string would become:
123210122  閱讀全文

posted @ 2007-10-23 13:34 wqwqwqwqwq 閱讀(1057) | 評論 (1) | 編輯 收藏

Maze Problem

     摘要: People enjoy mazes, but they also get them dirty. Arrows, graffiti, and chewing gum are just a few of the souvenirs people leave on the walls. You, the maze keeper, are assigned to whiten the maze walls. Each face of the wall requires one liter of paint, but you are only required to paint visible faces. You are given a map of the maze, and you must determine the amount of paint needed for the job.  閱讀全文

posted @ 2007-10-21 21:28 wqwqwqwqwq 閱讀(1462) | 評論 (1) | 編輯 收藏

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