Given a binary tree, return thezigzag level ordertraversal of its nodes' values. (ie, from left to right, then right to left for the next level and al...
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其他好文 时间:
2014-07-22 22:53:33
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229
Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't mat...
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其他好文 时间:
2014-07-22 22:53:14
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184
Problem Description
In mathematics, a subsequence is a sequence that can be derived from another sequence by deleting some elements without changing the order of the remaining elements. For example, ...
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其他好文 时间:
2014-07-21 11:13:44
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270
select?sku,COUNT(sku)?cc?from?sales_flat_order_item?where?order_id?in(SELECT?entity_id?from?sales_flat_order?where?state?in(‘complete‘,‘processing‘))?GROUP?BY?sku?ORDER?BY?cc?D...
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数据库 时间:
2014-07-21 10:08:17
阅读次数:
250
这里讲讲对binary Tree 进行level order Traversal.。 即BF traversal(广度优先遍历)。即首先, 访问根节点F, 打印出数据。 接着访问level 1的所有节点, 即D, J。 访问完level1之后, 访问level2, 即B, E, G , K 等等一次访问下去, 直至遍历完所有的节点。
BFS遍历的思路很简单, 但是当我们编程实现的时候,...
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编程语言 时间:
2014-07-20 23:11:21
阅读次数:
344
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).
For example:
Given binary...
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其他好文 时间:
2014-07-20 22:41:23
阅读次数:
303
Given an array withnobjects colored red, white or blue, sort them so that objects of the same color are adjacent, with the colors in the order red, wh...
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其他好文 时间:
2014-07-20 21:36:16
阅读次数:
186
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single ...
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其他好文 时间:
2014-07-20 21:32:55
阅读次数:
250
Problem Description
An equal sum partition of a sequence of numbers is a grouping of the numbers (in the same order as the original sequence) in such a way that each group has the same sum. For examp...
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其他好文 时间:
2014-07-20 15:42:42
阅读次数:
256
了解一个系统的性能通常是参考一些度量值(Metric),而如何计算出这些Metric就是我们要讨论的。Little Law(排队理论:利特儿法则)和Utilization Law是Performance Engineering(System Engineering的一部分)常用的法则,它们都是数学理论,因此可作为性能计算的理论依据。详细分析两个法则超出了我个人的知识范围,因此我将仅仅谈一下如何应用...
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其他好文 时间:
2014-07-20 10:25:28
阅读次数:
290