摘要： Given an integer, write a function to determine if it is a power of two.Analyse:***Notice that if a number is a power of 2, then the highest binary di... 阅读全文

摘要： Write a function to delete a node (except the tail) in a singly linked list, given only access to that node.Supposed the linked list is1 -> 2 -> 3 -> ... 阅读全文