FDTD

北京大学ACM POJ1007题 实现了对字符串按逆序排列(Peking ACM POJ1007 title achieved by reverse order of string)

给定一组物品，每种物品都有自己的重量和价格，在限定的总重量内，我们如何选择，才能使得物品的总价格最高(Given a set of items, each item has its own weight and price, within a limited total weight, what we choose to make the total price of the highest items)

进制转换，可实现2-16进制任意进制数间相互转换(Hex conversion, 2-16 hex convert any decimal number between)

计数一个字符串中所有字符出现的频数，并全部输出(Count the number of frequency of all the characters in a string appears, and all output)

简单的通讯录编程，基于c语言或C++，只有源码，喜欢的顶下(Simple address book program, based on c language or C++, only the source code, like the parietal)

abaqus网格到flac3d网格转换,仅支持实体单元，结构单元不能识别(translate flac3d model from abaqus model)

添加噪声处理，IMC-PID是利用内模控制原理来对PID参数进行计算，数据模型归一化，模态振动。( Add noise processing, The IMC- PID is using the internal model control principle for PID parameters is calculated, Normalized data model, modal vibration.)

可逆气固化学热泵制冷系统的动态模拟--考虑热容随反应进度的变化(Reversible gas-solid chemical heat pump refrigeration system dynamic simulation- consider the heat capacity changes with the reaction)

说明：  一个c语言实现的简单的语法分析器，包括词法分析和语法分析两部分。(Lexical Analysis Parser)

永远替换字符串中的字符，和word中的替换功能相同(Forever the replacement string of characters, and word replacement functionality in the same)