「克努斯-莫里斯-普拉特演算法(Knuth–Morris–Pratt algorithm / KMP algorithm)」是一種字串搜尋演算法(string-searching algorithm),可用來在一長串文字中,尋找特定字串。 匹配陣列(PS Array) 用來比較一字串中的內容重複出現的程度;在比較兩字串時,若兩字串不相符,匹配陣列(PS Array)可協助將比較的字串往後移。
代码如下: 1/*2return val means the begin pos of haystack3-1 means no matching substring4*/5int KMP(char *haystack,char *needle) {6//pre-process7if(haystack[0] ==0 && needle[0] ==0)8return0;910inti, j, k, min, cur;1112//construct F(t) in vector len13 vector<int >len;14...
publicstaticint[] next;publicstaticbooleankmp(String str, String dest){// i stands for index of str string, j stands for index in dest string.// At the beginning of each loop process, j is the new position of dest// taht should be compared.for(inti=0, j =0; i < str.length();...
Hybrid pattern matching algorithm based on BM KMP algorithm[J]. International Conference on Advanced Computer Theory & Engineering, 2010, 5(8):310 313. [3] 严蔚敏,吴伟民.数据结构(C语言版)[M].北京:清华大学出版社,2011. [4] 潘松,黄继业.EDA技术实用教程VHDL版(第五版)[M].北京:科学出版社, ...
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[leetcode]-202. Happy Number(C语言) Write an algorithm to determine if a number is "happy". A happy number is a number defined by the following process: Starting with any positive integer, replace the number by the sum of the ......
#include <cstdio> #include <cstring> #include <algorithm> #define N 1000010 int n,m; char a[N],b[N]; int nxt[N],ex[N]; int main(){ scanf("%s%s",a,b); n=strlen(a),m=strlen(b); nxt[0]=n; nxt[1]=0; while (1+nxt[1]<n && b[nxt[1]]==b[1+nxt[1]]) ...
Let's take a look at the process of the KMP algorithm matching the string txt according to this state transition diagram: Remember this GIF matching process, this is the core logic of the KMP algorithm! To describe the state transition diagram, we define a two-dimensional dp ...
1/*2*kmp.c : this file is apresentationof KMP algorithm in C34*write by zuanyg at 2012.12.2856*7*8*9*/10#include"kmp.h"1112voidFreeMatchingInfo(MatchingInfo *mi)13{14if(mi == NULL)return;15free(mi->indexOfMatch);16mi->indexOfMatch =NULL;17free(mi);18mi =NULL;19}2021static...