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[leetcode]Binary Tree Level Order Traversal @ Python
原题地址:http://oj.leetcode.com/problems/binary-tree-level-order-traversal/题意:二叉树的层序遍历的实现。解题思路:二叉树的层序遍历可以用bfs或者dfs来实现。这里使用的dfs实现,代码比较简洁。实际上,二叉树的先序遍历就是dfs实...
分类:编程语言   时间:2014-05-14 03:25:59    阅读次数:428
[leetcode]Binary Tree Level Order Traversal II @ Python
原题地址:http://oj.leetcode.com/problems/binary-tree-level-order-traversal-ii/题意:Given a binary tree, return thebottom-up level ordertraversal of its node...
分类:编程语言   时间:2014-05-12 22:03:27    阅读次数:581
[leetcode]Binary Tree Zigzag Level Order Traversal @ Python
原题地址:http://oj.leetcode.com/problems/binary-tree-zigzag-level-order-traversal/题意:Given a binary tree, return thezigzag level ordertraversal of its nod...
分类:编程语言   时间:2014-05-12 22:02:26    阅读次数:480
[leetcode]Minimum Depth of Binary Tree @ Python
原题地址:http://oj.leetcode.com/problems/minimum-depth-of-binary-tree/题意:Given a binary tree, find its minimum depth.The minimum depth is the number of no...
分类:编程语言   时间:2014-05-12 21:55:15    阅读次数:348
[leetcode]Convert Sorted Array to Binary Search Tree @ Python
原题地址:http://oj.leetcode.com/problems/convert-sorted-array-to-binary-search-tree/题意:将一个排序好的数组转换为一颗二叉查找树,这颗二叉查找树要求是平衡的。解题思路:由于要求二叉查找树是平衡的。所以我们可以选在数组的中间那...
分类:编程语言   时间:2014-05-12 21:44:57    阅读次数:379
[leetcode]Convert Sorted List to Binary Search Tree @ Python
原题地址:http://oj.leetcode.com/problems/convert-sorted-list-to-binary-search-tree/题意:将一条排序好的链表转换为二叉查找树,二叉查找树需要平衡。解题思路:两个思路:一,可以使用快慢指针来找到中间的那个节点,然后将这个节点作为...
分类:编程语言   时间:2014-05-12 21:07:00    阅读次数:405
[leetcode]Binary Tree Postorder Traversal @ Python
原题地址:http://oj.leetcode.com/problems/binary-tree-postorder-traversal/题意:实现后序遍历。递归实现比较简单,非递归实现。解题思路:这道题的迭代求解比先序遍历和后序遍历要麻烦一些。假设一棵树是这样的: ...
分类:编程语言   时间:2014-05-12 08:13:39    阅读次数:336
[leetcode]Flatten Binary Tree to Linked List @ Python
原题地址:http://oj.leetcode.com/problems/flatten-binary-tree-to-linked-list/题意:Given a binary tree, flatten it to a linked list in-place.For example,Given...
分类:编程语言   时间:2014-05-12 05:30:32    阅读次数:367
[leetcode]Sum Root to Leaf Numbers @ Python
原题地址:http://oj.leetcode.com/problems/sum-root-to-leaf-numbers/题意:Given a binary tree containing digits from0-9only, each root-to-leaf path could repre...
分类:编程语言   时间:2014-05-12 01:28:30    阅读次数:440
HDU 4282 A very hard mathematic problem
转载请注明出处:http://blog.csdn.net/u012860063?viewmode=contents 题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=4287 Problem Description   Haoren is very good at solving mathematic problems. Today...
分类:其他好文   时间:2014-05-11 12:57:48    阅读次数:356
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