Merge pull request #2 from ds-sww/master

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size,isEmpty,get,add,remove
fix bugs of remove()
first homework
first commit
修改了文件目录
抽象出了checkSize方法
发现remove忘记返回值了...
hasitu
Create ArrayList1.cpp
Personal directory created
compelete ArrayListBase
assignment2 added.
真·assignment2 added.
clear
assignment0.
修改输入输出文件的位置
...修正目录again
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