2014年4月28日
Construct Binary Tree from Preorder and Inorder Traversal
摘要： Given preorder and inorder traversal of a tree, construct the binary tree.Note:You may assume that duplicates do not exist in the tree.思路：由前序遍历数组和中序遍历... 阅读全文
posted @ 2014-04-28 10:19 Awy 阅读(144) 评论(0) 推荐(0)
Letter Combinations of a Phone Number
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 @ 2014-04-28 09:42 Awy 阅读(123) 评论(0) 推荐(0)