After an item has been scraped by a spider,it is sent to the Item Pipeline which process it through several components that are executed sequentially....
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其他好文 时间：
2014-07-14 00:20:06
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323
What you need to do is edit the configure file. And find out this:SLIBNAME='$(SLIBPREF)$(FULLNAME)$(SLIBSUF)'SLIBNAME_WITH_VERSION='$(SLIBNAME).$(LIBV...
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其他好文 时间：
2014-07-14 00:00:03
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278
原题： ZOJ 3684http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemCode=3684题意： 给你一棵树，树的根是树的中心（到其他点的最远距离最小）。现在你要破坏所有叶子节点到根节点的连通，每条边破坏都需要一定能量。你有一个能量为p...
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其他好文 时间：
2014-07-13 23:52:11
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367
Given two sorted integer arrays A and B, merge B into A as one sorted array.
Note:
You may assume that A has enough space (size that is greater or equal to m + n) to hold additional elements from ...
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其他好文 时间：
2014-07-13 17:21:40
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208
Given a linked list, determine if it has a cycle in it.
Follow up:
Can you solve it without using extra space?
/**
* Definition for singly-linked list.
* class ListNode {
* int val;
* ...
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其他好文 时间：
2014-07-13 16:32:04
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152
/*
A - 广搜 基础
Time Limit:2000MS Memory Limit:65536KB 64bit IO Format:%I64d & %I64u
Submit
Status
Description
Farmer John has been informed of the location of a fugitive cow and wants to catch...
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其他好文 时间：
2014-07-13 16:14:50
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236
Given two binary trees, write a function to check if they are equal or not.
Two binary trees are considered equal if they are structurally identical and the nodes have the same value.
/**
* Defin...
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其他好文 时间：
2014-07-13 15:50:25
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158
第四章1、sum+=x++;的语句等价于sum=sum+x;和x=x+1;两条语句2、do....while循环语句与while循环语句类似。他们之间的差别是while语句为先判断条件是否成立再执行循环体，而do...while循环语句是先执行一次循环体，在判断条件是否成立。也就是说do....while循环语句至少执行一次..
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编程语言 时间：
2014-07-13 14:18:10
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216
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.
For example:
Given the below binary tree and sum
...
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其他好文 时间：
2014-07-13 13:58:01
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184
Design an algorithm and write code to find the first common ancestory of two nodes in a binary tree. Avoid storing additional nodes in data structure....
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其他好文 时间：
2014-07-13 13:24:21
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279
