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单链表逆置,超级热门的面试题,感觉最近见的比较多啊 一种方法是非递归,一种方法是递归 非递归方法: 阅读全文
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“开-闭”原则 (Open-Closed principle, OCP) 一个软件实体应当对扩展开放,对修改关闭。 Software entities should be open for extension, but closed for modification. 在设计一个模块的时候,应当使这 阅读全文
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1867: John and Health rate Time Limit: 2 Sec Memory Limit: 128 Mb Submitted: 328 Solved: 77 Description The cold and flu season is here.John is worrie 阅读全文