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搜索关键字:traversal    ( 1649个结果
lintcode453- Flatten Binary Tree to Linked List- easy
Flatten a binary tree to a fake "linked list" in pre-order traversal. Here we use the right pointer in TreeNode as the nextpointer in ListNode. Notice ...
分类:其他好文   时间:2017-10-13 10:28:21    阅读次数:160
144. Binary Tree Preorder Traversal
class Solution { public List preorderTraversal(TreeNode root) { Stack stack=new Stack(); List res=new ArrayList(); while(root!=null||!stack.isEmpty())... ...
分类:其他好文   时间:2017-10-12 10:08:42    阅读次数:181
二叉树遍历
二叉树遍历最简单的就是递归了。因为递归实质上是栈存了一些中间值,所以我们可以使用stack实现迭代版的遍历。 中序遍历 步骤: 首先将root节点作为当前节点。 1.如果当前节点不为空,压入当前节点。将左节点作为当前节点。 2.否则弹出栈顶节点作为当前节点,输出当前节点。 3.如果右节点不为空,右节 ...
分类:其他好文   时间:2017-10-11 21:48:46    阅读次数:183
105. Construct Binary Tree from Preorder and Inorder Traversal
Given preorder and inorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree. 方法一:迭代 方法二:递归 ...
分类:其他好文   时间:2017-10-10 19:20:19    阅读次数:147
1020. Tree Traversals (25)
Suppose that all the keys in a binary tree are distinct positive integers. Given the postorder and inorder traversal sequences, you are supposed to ou ...
分类:其他好文   时间:2017-10-09 13:11:11    阅读次数:153
lintcode480- Binary Tree Paths- easy
Given a binary tree, return all root-to-leaf paths. Example Given the following binary tree: 1 / \ 2 3 \ 5 All root-to-leaf paths are: [ "1->2->5", "1 ...
分类:其他好文   时间:2017-10-08 15:35:21    阅读次数:158
LeetCode:二叉树的非递归中序遍历
第一次动手写二叉树的,有点小激动,64行的if花了点时间,上传leetcode一次点亮~~~ 1 /* inorder traversal binary tree */ 2 #include 3 #include 4 5 6 struct TreeNode { 7 int val; 8 struct... ...
分类:其他好文   时间:2017-10-01 14:25:12    阅读次数:159
94. Binary Tree Inorder Traversal
public class Solution { public List inorderTraversal(TreeNode root) { List res=new ArrayList(); Stack stack=new Stack(); while(root!=null||!stack.isEm... ...
分类:其他好文   时间:2017-09-29 09:56:30    阅读次数:116
[GeeksForGeeks] Remove all half nodes of a given binary tree
Given A binary Tree, how do you remove all the half nodes (which has only one child)? Note leaves should not be touched as they have both children as ...
分类:其他好文   时间:2017-09-29 09:52:12    阅读次数:156
105. Construct Binary Tree from Preorder and Inorder Traversal
Given preorder and inorder traversal of a tree, construct the binary tree. Note:You may assume that duplicates do not exist in the tree. 解题思路:最经典的递归,已 ...
分类:其他好文   时间:2017-09-28 00:31:25    阅读次数:134
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