Algorithm and Data Structure

It's very interesting to reinvent the wheel. Try encountered text-book concept by my hand

Class and Inheritance

Build code in a structured way, in a reuseable way, in a modularized way

Exception handling

Consider as many as exception, from data type, invaild input and etc

Code in a prefessional style

Let everything clear and denfinate, good-looking and friendly for search

Test

Test whenever finish something, make each of them as a moddule with update-ability

Programming mathemetic

Coding for mathemetic solutions, such as linear equations and optimize problem