摘要：
C/C++位操作运算符操作符功能用法~位求反~expr>右移expr1>> expr2&位与expr1 & expr2^位异或expr1^ expr2|位或expr1| expr2例子请参见http://www.cnblogs.com/thujason/archive/2010/07/08/1773... 阅读全文
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
