历史不容假设[问题描述]Given a binary tree, return thepostordertraversal of its nodes' values.For example:Given binary tree{1,#,2,3}, 1 \ 2 / 3retu...
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其他好文 时间:
2014-08-14 19:30:29
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191
#define NULL 0class Solution {public: vector preorderTraversal(TreeNode *root) { stack s; vector v1; if(root!=NULL) s.p...
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其他好文 时间:
2014-08-14 13:35:48
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210
Given a binary tree, return the preorder traversal of its nodes' values.For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3return [1,2,3]...
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其他好文 时间:
2014-08-11 11:53:42
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185
Given a binary tree, return the postorder traversal of its nodes' values.For example:Given binary tree {1,#,2,3}, 1 \ 2 / 3return [3,2,1...
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其他好文 时间:
2014-08-11 11:45:02
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251
O(n) complexity, have a traversal for the tree. Get the information of all children, then traverse the tree again.
#include
#include
#include
#include
using namespace std;
class Node {
pub...
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其他好文 时间:
2014-08-10 13:00:30
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238
注:后序遍历是较麻烦的一个,不可大意。关键两点: 1.要走到 p->left | p->right ==0, 2.每次出栈出两个结点。
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其他好文 时间:
2014-08-10 01:45:39
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286
Given a binary tree, return the zigzag level order traversal of its nodes' values. (ie, from left to right, then right to left for the next level and alternate between).
zigzag层序遍历树
For example:
Given binary...
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其他好文 时间:
2014-08-09 23:19:59
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363
Given inorder and postorder traversal of a tree, construct the binary tree.
Note:
You may assume that duplicates do not exist in the tree.
给出二叉树的中序遍历和后序遍历结果,恢复出二叉树。
后序遍历序列的最后一个元素值是二叉树的根节点的值,查找...
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其他好文 时间:
2014-08-09 23:15:09
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312