2015年2月15日
Symmetric Tree
摘要： Given a binary tree, check whether it is a mirror of itself (ie, symmetric around its center).For example, this binary tree is symmetric: 1 / \ ... 阅读全文
posted @ 2015-02-15 16:00 mrpod2g 阅读(97) 评论(0) 推荐(0)
Path Sum
摘要： Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Fo... 阅读全文
posted @ 2015-02-15 14:16 mrpod2g 阅读(119) 评论(0) 推荐(0)