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PAT 1127 ZigZagging on a Tree (30)
Suppose that all the keys in a binary tree are distinct positive integers. A unique binary tree can be determined by a given pair of postorder and ino ...
分类:其他好文   时间:2018-06-22 17:46:11    阅读次数:164
1138 Postorder Traversal (25)
Suppose that all the keys in a binary tree are distinct positive integers. Given the preorder and inorder traversal sequences, you are supposed to out ...
分类:其他好文   时间:2018-06-06 01:02:16    阅读次数:161
二叉树的遍历(循环方式)
前序遍历(Preorder Traverse) 根结点-左子树-右子树 Java代码实现: 后序遍历(postorder traverse) 左子树-右子树-根结点 代码实现: 中序遍历(inorder traverse): 左子树-根结点-右子树 代码实现: ...
分类:其他好文   时间:2018-04-07 15:02:24    阅读次数:172
145 Binary Tree Postorder Traversal 二叉树的后序遍历
给定一棵二叉树,返回其节点值的后序遍历。例如:给定二叉树 [1,null,2,3], 1 \ 2 / 3返回 [3,2,1]。注意: 递归方法很简单,你可以使用迭代方法来解决吗?详见:https://leetcode.com/problems/binary-tree-postorder-traver ...
分类:其他好文   时间:2018-04-06 14:04:18    阅读次数:162
106 Construct Binary Tree from Inorder and Postorder Traversal 从中序与后序遍历序列构造二叉树
给定一棵树的中序遍历与后序遍历,依据此构造二叉树。注意:你可以假设树中没有重复的元素。例如,给出中序遍历 = [9,3,15,20,7]后序遍历 = [9,15,7,20,3]返回如下的二叉树: 3 / \ 9 20 / \ 15 7详见:https://leetcode.com/problems/ ...
分类:其他好文   时间:2018-04-04 23:29:28    阅读次数:264
【PAT1138】Postorder Traversal(25)
Suppose that all the keys in a binary tree are distinct positive integers. Given the preorder and inorder traversal sequences, you are supposed to out ...
分类:其他好文   时间:2018-03-17 00:42:20    阅读次数:248
浙大pat甲级题目---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:2018-03-14 22:11:45    阅读次数:179
复原二叉树
1.由(preorder+inorder)复原 2.由(inorder+postorder)复原 ...
分类:其他好文   时间:2018-03-12 11:07:31    阅读次数:151
二叉树遍历(先序、中序、后序)
二叉树的遍历(递归与非递归) 遍历:traversal 递归:recursion 栈 回溯 递归 栈和回溯有关 本文讨论二叉树的常见遍历方式的代码(Java)实现,包括 前序(preorder)、中序(inorder)、后序(postorder)、层序(level order), 进一步考虑递归和非 ...
分类:其他好文   时间:2018-03-11 00:25:19    阅读次数:243
145. Binary Tree Postorder Traversal
Given a binary tree, return the postorder traversal of its nodes' values. For example:Given binary tree [1,null,2,3], ...
分类:其他好文   时间:2018-03-03 20:32:51    阅读次数:137
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