摘要: Clone an undirected graph. Each node in the graph contains alabeland a list of itsneighbors.OJ's undirected graph serialization:Nodes are labeled uniq... 阅读全文
posted @ 2014-06-03 20:51 小菜刷题史 阅读(332) 评论(0) 推荐(0) 编辑
摘要: Divide two integers without using multiplication, division and mod operator. 1 class Solution { 2 public: 3 int divide(int dividend, int divisor) ... 阅读全文
posted @ 2014-06-03 19:40 小菜刷题史 阅读(122) 评论(0) 推荐(0) 编辑
摘要: Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon... 阅读全文
posted @ 2014-06-03 18:26 小菜刷题史 阅读(182) 评论(0) 推荐(0) 编辑
摘要: The count-and-say sequence is the sequence of integers beginning as follows:1, 11, 21, 1211, 111221, ...1is read off as"one 1"or11.11is read off as"tw... 阅读全文
posted @ 2014-06-03 16:24 小菜刷题史 阅读(159) 评论(0) 推荐(0) 编辑