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KMP KMP作为一个广为人知的字符串匹配算法——也是本文的前一半。 旨在讲解next数组的求法，并使读者理解。 先扔代码 luoguP3375 【模板】KMP字符串匹配 #include<iostream> #include<cstring> using namespace std; const int N=5000002; int next[N]; string s1,s2; void init(string s){ for(int i=0,j=next[0]=-1,len=s.size();i<len;){ if(j==-1||s[i]==s[j]) next[++i]=++j; else j=next[j]; } } int main(){ cin >> s1 >> s2; init(s2); for(int i=0,j=0,len=s1.size();i<len;){ if(j==-1||s1[i]==s2[j]) ++i,++j; else j=next[j]; if(j==s2.size())cout << i-s2.size()+1 << endl; }for(int i=1,len=s2.size();i<=len;++i) cout << next[i] << " "; return 0; } 我们先看到 init 初始化函数。 void init(string

I need to define a struct which has data members of size 2 bits and 6 bits. Should I use char type for each member?Or ,in order not to waste a memory,can I use something like :2 \ :6 notation? how can I do that? Can I define a typedef for 2 or 6 bits type? You can use something like: typedef struct { unsigned char SixBits:6; unsigned char TwoBits:2; } tEightBits; and then use: tEightBits eight; eight.SixBits = 31; eight.TwoBits = 3; But, to be honest, unless you're having to comply with packed data external to your application, or you're in a very memory constrained situation, this sort of

I am creating a photo gallery using jquery. I am taking and resizing the images on load to create thumbnails. I want to get the original value of the image's size so that later on I can take it back to its original size. Anyone know how to do this? I have the following code: obj.find("img").each(function(){ }); This loops through all the images within the container div. I then tried to do: $(this).width(); //didnt work this.width; //didnt work any ideas? Pekka 웃 I asked the same question recently and got a good answer: A new image element is created but not attached to the DOM. Its height and

I'm almost done building my first iPhone app and am trying to add a background image, and am finding it a little confusing, because nowadays there's like 3 or 4 different size screens among the different iPhone versions, with different resolutions to boot. So while I'm aware of the whole image@2x.png thing, I still don't know what I really need. If I want my app to run on iPhone 4/4s, 5s/5c, 6/6+, how many different versions of a background image do I need, and at what sizes and resolutions? I have googled around and have not found any cohesive answers up to date for 2014. Also, if the iPhone

I am working on a program for touchscreens. I am using c# and Visual studio 2008. Is there any way to change the width of the scrollbars? I know that i can change in Display Properties of Windows. But i only want in my programm not in the complete system. Thanks for ya help! Leniel Maccaferri Check this out: Winforms - Adjust width of vertical scrollbar on CheckedListBox Worth mentioning too: .NET Compact framework - make scrollbars wider More of the same, but this time with a better solution through the use of the scrollbar control: Change the width of a scrollbar Another one in which the guy

优雅即是暴力！ 替罪羊树的构建其实就是暴力的构建。 -> 即每次插入的时候我们都判断是否需要重构。 要注意什么什么时候传的是一个引用，什么时候不需要传引用 1 #include <stdio.h> 2 #include <algorithm> 3 #include <iostream> 4 #include <stdbool.h> 5 #include <stdlib.h> 6 #include <string.h> 7 #include <stack> 8 #include <map> 9 #include <vector> 10 11 #define INF 0x3f3f3f3f 12 using namespace std; 13 const int maxn = 1e5 + 5; 14 const double alpha = 0.75; 15 16 17 struct Node { 18 int l,r,val; 19 int size,fact; 20 bool exist; 21 }tzy[maxn]; 22 23 int cnt,root; 24 25 void newnode(int &now,int val){ 26 now = ++cnt; 27 tzy[now].val = val; 28 tzy[now].size = tzy[now].fact = 1;