开关电源原理性书籍，主要介绍了开关电源的脉宽调制技术。Newnes is an imprint of Butterworth-Heinemann
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SQL Tuning author Dan Tow outlines a timesaving method he's developed for finding the optimum execution plan--rapidly and systematically--regardless of the complexity of the SQL or the database platform being used. You'll learn how to understand and
Use only good quality sandpaper. The sandpaper controls the sanding efficiency, not the amount of force you apply to the tool. Excessive force will reduce the sanding efficiency and cause motor overload. Replacing the sandpaper regularly will maintai
Tuning a network interface card (NIC) for optimum throughput and latency is a complex process with many factors to consider.
These factors include capabilities of the network interface, driver features and options, the system hardware that Red Hat En
动态规划解决矩阵连乘问题，随机产生矩阵序列，输出形如((A1(A2A3))(A4A5))的结果。
代码：
#encoding: utf-8
=begin
author: xu jin, 4100213
date: Oct 28, 2012
MatrixChain
to find an optimum order by using MatrixChain algorithm
example output:
The given array is:[30, 35, 15, 5, 10, 20, 25
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