prototype只有function才有的属性。var a = function() { this.age = 12; this.name = "haha"; };a.prototype = { address: "shanghai", price:13 };/...
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其他好文 时间：
2015-01-12 20:45:03
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103
Say you have an array for which theithelement is the price of a given stock on dayi.If you were only permitted to complete at most one transaction (ie...
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其他好文 时间：
2015-01-12 14:17:39
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207
Pat1090代码
题目描述：
A supply chain is a network of retailers（零售商）, distributors（经销商）, and suppliers（供应商）-- everyone involved in moving a product from supplier to customer.
Starting from one root supp...
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其他好文 时间：
2015-01-10 01:28:52
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212
Problem Description
Corrupt governors always find ways to get dirty money. Paint something, then sell the worthless painting at a high price to someone who wants to bribe him/her on an auction, thi...
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其他好文 时间：
2015-01-09 17:29:52
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335
题目：
Say you have an array for which the ith element is the price of a given stock on day i.
Design an algorithm to find the maximum profit. You may complete as many transactions as you like (ie,...
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编程语言 时间：
2015-01-08 11:21:57
阅读次数：
239
在前面的example中，我们知道定义一个Item类很简单，只要继承scrapy.Item,然后添加几个类型为scrapy.Field的对象作为类属性，就像下面这样importscrapy
classProduct(scrapy.Item):
name=scrapy.Field()
price=scrapy.Field()
stock=scrapy.Field()
last_updated=scrapy.Field(..
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编程语言 时间：
2015-01-08 07:18:25
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958
http://codeforces.com/problemset/problem/19/B
Bob came to a cash & carry store, put n items into his trolley, and went to the checkout counter to pay. Each item is described by its price ci and...
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其他好文 时间：
2015-01-07 23:35:14
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138
Best Time to Buy and Sell Stock ISay you have an array for which theithelement is the price of a given stock on dayi.If you were only permitted to com...
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其他好文 时间：
2015-01-07 23:26:24
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199
Best Time to Buy and Sell StockSay you have an array for which the ith element is the price of a given stock on day i.If you were only permitted to co...
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编程语言 时间：
2015-01-06 22:57:50
阅读次数：
283
Say you have an array for which the ith element is the price of a given stock on day i.
Design an algorithm to find the maximum profit. You may complete at most two transactions.
Note:
You may ...
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其他好文 时间：
2015-01-06 15:41:54
阅读次数：
189
