摘要：
这段代码主要关注两点:1、字典的key是唯一值 2、count函数的使用 阅读全文
发上等愿，结中等缘，享下等福；择高处立，寻平处住，向宽处行
Brick walls are there for a reason :they let us prove how badly we want things
It's not who you are underneath, it's what you do that defines you
Brick walls are there for a reason :they let us prove how badly we want things
