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leetcode -- Flatten Binary Tree to Linked List
算法:1. 对root的左子树做处理,让左子树的根节点作为,根节点的右子树,并让右子树作为左子树根节点的右子树的子树2. 递归遍历右子树public void flatten(TreeNode root) { if(root==null){ return; ...
分类:其他好文   时间:2014-05-26 23:39:49    阅读次数:253
LeetCode:Gray Code 题解
题目描述:The gray code is a binary numeral system where two successive values differ in only one bit.Given a non-negative integernrepresenting the total n...
分类:其他好文   时间:2014-05-26 21:30:04    阅读次数:296
[leetcode]Recover Binary Search Tree @ Python
原题地址:https://oj.leetcode.com/problems/recover-binary-search-tree/题意:Two elements of a binary search tree (BST) are swapped by mistake.Recover the tree...
分类:编程语言   时间:2014-05-26 13:25:43    阅读次数:261
Leetcode: Convert Sorted Array to Binary Search Tree
基本上一次过,要注意边界条件的问题:如果在recursion里有两个参数int begin, end, 递归写作recursion(num, mid+1, end), 因为+号的原因,递归中是会出现begin > end 的情况的,所以考虑初始条件的时候应该要考虑充分。 1 /** 2 * Def....
分类:其他好文   时间:2014-05-26 12:12:49    阅读次数:257
Scramble String
Given a strings1, we may represent it as a binary tree by partitioning it to two non-empty substrings recursively.Below is one possible representation...
分类:其他好文   时间:2014-05-26 11:24:36    阅读次数:214
[leetcode]Validate Binary Search Tree @ Python
原题地址:https://oj.leetcode.com/problems/validate-binary-search-tree/题意:检测一颗二叉树是否是二叉查找树。解题思路:看到二叉树我们首先想到需要进行递归来解决问题。这道题递归的比较巧妙。让我们来看下面一棵树: ...
分类:编程语言   时间:2014-05-26 10:48:19    阅读次数:291
Eclipse性能优化
1、取消不必要的validate Window-->perferences-->Validation2、取消一些自动启动项 Window-->Gennerl-->Startup and Shutdown 如Mylyn是一个任务管理和跟踪工具。可取消待续……
分类:系统相关   时间:2014-05-26 10:34:42    阅读次数:272
[leetcode]Same Tree @ Python
原题地址:https://oj.leetcode.com/problems/same-tree/题意:判断两棵树是否是同一棵树。解题思路:这题比较简单。用递归来做。首先判断两个根节点的值是否相同,如果相同,递归判断根的左右子树。代码:# Definition for a binary tree n....
分类:编程语言   时间:2014-05-26 10:30:17    阅读次数:289
2014北京邀请赛 Happy Reversal
H. Happy Reversal 64-bit integer IO format: %lld      Java class name: Main Elfness is studying in an operation "NOT". For a binary number A, if we do operation "NOT A", after that, all digit...
分类:移动开发   时间:2014-05-23 00:43:49    阅读次数:430
Maximum Depth of Binary Tree
Given a binary tree, find its maximum depth.The maximum depth is the number of nodes along the longest path from the root node down to the farthest le...
分类:其他好文   时间:2014-05-22 16:05:56    阅读次数:239
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