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随笔分类 -  Leetcode

Binary Tree Postorder Traversal--leetcode难题讲解系列
摘要：https://leetcode.com/problems/binary-tree-postorder-traversal/Given a binary tree, return the postorder traversal of its nodes' values.For example:Giv... 阅读全文
posted @ 2015-10-21 15:25 huashiyiqike 阅读(873) 评论(0) 推荐(0)
Populating Next Right Pointers in Each Node II--leetcode难题讲解系列
摘要：Given a binary tree struct TreeLinkNode { TreeLinkNode *left; TreeLinkNode *right; TreeLinkNode *next; }Populate each next pointe... 阅读全文
posted @ 2015-10-21 11:16 huashiyiqike 阅读(364) 评论(0) 推荐(0)
Recover Binary Search Tree--leetcode难题讲解
摘要：Two elements of a binary search tree (BST) are swapped by mistake.Recover the tree without changing its structure.Note:A solution using O(n) space is ... 阅读全文
posted @ 2015-10-20 21:33 huashiyiqike 阅读(290) 评论(0) 推荐(0)