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LeetCode OJ - Minimum && Maximum Depth of Binary Tree
这两道题用递归的解法都很简单,只是稍有不同。下面是AC代码: 1 /** 2 * Given a binary tree, find its minimum depth. 3 * the minimum depth is the number of nodes along th...
分类:其他好文   时间:2014-05-10 08:47:32    阅读次数:271
LeetCode OJ - construct Binary Tree from Inorder and Postorder/Preorder Traversal
不断递归的实现!!!!下面是AC代码: 1 /** 2 * Given inorder and postorder traversal of a tree, construct the binary tree. 3 * @param inorder 4 * @param...
分类:其他好文   时间:2014-05-10 08:40:40    阅读次数:297
Leetcode: Minimum Depth of Binary Tree
这道题因为不仔细的缘故两次过,与Maximum Depth of Binary Tree问题类似,区别在于这个问题中,如果一个节点左子树为空、右子树有值,则该节点的深度应取决于右子树,而不能直接取min{左,右} 1 /** 2 * Definition for binary tree 3 * .....
分类:其他好文   时间:2014-05-10 01:40:13    阅读次数:293
What is a heap?--reference
A heap is a partially sorted binary tree. Although a heap is not completely in order, it conforms to a sorting principle: every node has a value less ...
分类:其他好文   时间:2014-05-09 17:34:18    阅读次数:339
Leetcode: Path Sum
1 /** 2 * Definition for binary tree 3 * public class TreeNode { 4 * int val; 5 * TreeNode left; 6 * TreeNode right; 7 * TreeNo...
分类:其他好文   时间:2014-05-09 12:16:45    阅读次数:232
EasyUI Tree与Datagrid联动
效果图这是一个简单的solr检索的例子 输入关键词,显示树 选择一个节点,得到该节点下文档信息 代码:JSP:重点是标红的URL传递 Carrot2: ...
分类:其他好文   时间:2014-05-09 11:31:09    阅读次数:567
二叉树,添加,查找
public class Tree { TreeNode last = null; TreeNode root = null; public Tree(int value){ root = createNode(value); } ...
分类:其他好文   时间:2014-05-07 18:45:42    阅读次数:275
Leetcode | Binary Tree Maximum Path Sum
Given a binary tree, find the maximum path sum.The path may start and end at any node in the tree.For example:Given the below binary tree, 1 ...
分类:其他好文   时间:2014-05-07 09:36:09    阅读次数:300
LeetCode OJ - Symmetric Tree && Same Tree
这两道题,大同小异。 我都是用BFS,在遍历的过程,判断结构是否相同/对称,值是否相同。下面是AC代码: 1 /** 2 * Given a binary tree, check whether it is a mirror of itself (ie, symmetric aroun...
分类:其他好文   时间:2014-05-05 09:48:26    阅读次数:401
LeetCode OJ - Binary Tree Level Order Traversal 1 && 2
BFS以及它的扩展,我发现栈是个很好用的数据结构,特别是对于顺序需要颠倒的时候!!!这里有个重要的信息:可以用null来标识一个level的结束!!!下面是AC代码: 1 /** 2 * Given a binary tree, return the bottom-up level ord...
分类:其他好文   时间:2014-05-05 09:46:06    阅读次数:402
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