2016年1月30日
Lowest Common Ancestor of a Binary Tree leetcode
摘要： Given a binary tree, find the lowest common ancestor (LCA) of two given nodes in the tree. According to the definition of LCA on Wikipedia: “The lowes 阅读全文
posted @ 2016-01-30 16:20 sdlwlxf 阅读(153) 评论(0) 推荐(0)
Bulls and Cows leetcode
摘要： You are playing the following Bulls and Cows game with your friend: You write down a number and ask your friend to guess what the number is. Each time 阅读全文
posted @ 2016-01-30 12:41 sdlwlxf 阅读(169) 评论(0) 推荐(0)