Given a binary tree and a sum, find all root-to-leaf paths where each path's sum equals the given sum. For example:Given the below binary tree and sum ...
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其他好文 时间:
2016-09-12 00:41:41
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120
思路:递归。 null也是tree。 null tree (definition) Definition: (1) A tree which is empty. (2) A tree whose leaf nodes all have a null value. https://xlinux.nis ...
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其他好文 时间:
2016-09-10 06:44:29
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165
题目: Given a binary tree containing digits from 0-9 only, each root-to-leaf path could represent a number. An example is the root-to-leaf path 1->2->3 ...
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其他好文 时间:
2016-09-09 16:53:45
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106
Given a binary tree, return all root-to-leaf paths. For example, given the following binary tree: All root-to-leaf paths are: ...
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其他好文 时间:
2016-08-28 18:07:27
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135
Given a binary tree and a sum, determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum. F ...
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其他好文 时间:
2016-08-28 16:09:59
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105
组合模式 组合模式主要描述部分与整体的关系,当我们描述的结构是树形结构时如XML,可以使用组合模式来处理,它最大的好处就是使得用户处理树中根节点、分支节点以及叶子节点具有一致性。 其类图结构如下所示: 抽象构建(Component):定义叶子和容器构建的共同点 叶子(leaf):叶子对象,其下再也没 ...
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其他好文 时间:
2016-08-24 18:58:34
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162
Question:
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 leaf node.
找二叉树的最大深度
Algori...
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其他好文 时间:
2016-08-22 10:53:34
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132
Question:
Given a binary tree, return the bottom-up level order traversal of its nodes' values. (ie, from left to right, level by level from leaf to root).
For example:
Given binary tree [3,9,2...
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其他好文 时间:
2016-08-22 10:51:24
阅读次数:
162
介绍 茎叶图(Stem-and-Leaf display)又称“枝叶图”,由统计学家约翰托奇( Arthur Bowley)设计,它的思路是将数组中的数按位数进行比较,将数的大小基本不变或变化不大的位作为一个主干(茎),将变化大的位的数作为分枝(叶),列在主干的后面,这样就可以清楚地看到每个主干后面... ...
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其他好文 时间:
2016-08-14 14:37:32
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181
sum-root-to-leaf-numbers 题目描述 Given a binary tree containing digits from0-9only, each root-to-leaf path could represent a number. An example is the ro ...
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其他好文 时间:
2016-08-14 07:16:36
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155