About:
hamsterdb is a database engine written in ANSI C. It supports a B+Tree index structure, uses memory mapped I/O (if available), supports cursors, and can create in-memory databases.
Release focus: Major feature enhancements
Changes:
This release comes with many changes and new features. It can manage multiple databases in one file. A new flag (HAM_LOCK_EXCLUSIVE) places an exclusive lock on the file. hamsterdb was ported to Windows CE, and the Solution file for Visual Studio 2005 now supports builds for x64. Several minor bugs were fixed, performance was improved, and small API changes occurred. Pre-built libraries for Windows (32-bit and 64-bit) are available for download.
Author:
cruppstahl
結合單片機和M a t l a b 兩者的優點,基于事件驅動的中斷通信機制,提出一種Matlab 環境下PC 機與
單片機實時串行通信及數據處理的方法;完成單片機數據采集系統與PC 機的RS-232/RS-485 串行通
信及其通信數據的分析處理、文件存儲、F I R 濾波及圖形顯示;簡化系統開發流程,提高開發效率。
該方法已成功應用于一個P I C 1 6 F 8 7 6 單片機應用系統實例之中
實現最優二叉樹的構造;在此基礎上完成哈夫曼編碼器與譯碼器。 假設報文中只會出現如下表所示的字符:
字符 A B C D E F G H I J K L M N
頻度 186 64 13 22 32 103 21 15 47 57 1 5 32 20 57
字符 O P Q R S T U V W X Y Z , .
頻度 63 15 1 48 51 80 23 8 18 1 16 1 6 2
要求完成的系統應具備如下的功能:
1.初始化。從終端(文件)讀入字符集的數據信息,。建立哈夫曼樹。
2.編碼:利用已建好的哈夫曼樹對明文文件進行編碼,并存入目標文件(哈夫曼碼文件)。
3.譯碼:利用已建好的哈夫曼樹對目標文件(哈夫曼碼文件)進行編碼,并存入指定的明文文件。
4.輸出哈夫曼編碼文件:輸出每一個字符的哈夫曼編碼。
Problem B:Longest Ordered Subsequence
A numeric sequence of ai is ordered if a1 < a2 < ... < aN. Let the subsequence of the given numeric sequence (a1, a2, ..., aN) be any sequence (ai1, ai2, ..., aiK), where 1 <= i1 < i2 < ... < iK <= N. For example, sequence (1, 7, 3, 5, 9, 4, 8) has ordered subsequences, e. g., (1, 7), (3, 4, 8) and many others. All longest ordered subsequences are of length 4, e. g., (1, 3, 5, 8).
basic.c */
/**//* Project:NeuroBasic, basic package*//**/
/* Survey:This is a simple Basic b-code compiler which*/
/*can be used as a comfortable command shell for */
/* any program. The actual compiler is found in */
/*compiler.c.*/
/*The functions m_fctptr() and user_server()*/
/*build an interface to an
I. C. Wong, Z. Shen, J. G. Andrews, and B. L. Evans, ``A Low Complexity Algorithm for Proportional Resource Allocation in OFDMA Systems , Proc. IEEE Int. Work. Signal Processing Systems, 針對這篇文章給出的源代碼