摘要：
A linked list is given such that each node contains an additional random pointer which could point to any node in the list or null.Return a deep copy ... 阅读全文
摘要：
http://www.cnblogs.com/springcsc/archive/2009/12/03/1616330.html注：StringBuffer类和String一样，也用来代表字符串，只是由于StringBuffer的内部实现方式和String不同，所以StringBuffer在进行字符... 阅读全文