I am having trouble understanding how the rolling hash algorithm works after the hash has been reduced to modulus value by dividing by a prime number. Consider the sequence of 5 digits in the numb...

I'm looking for an efficient hash function for Rabin-Karp algorithm. Here is my actual code (C programming language). static bool f2(char const *const s1, size_t const n1, char const *const s2, ...

I'm learning about string searching algorithms and understand how they work but haven't found a good enough answer about in which cases Rabin-Karp algorithm would be more effective than KMP or Boye...

In the Top Coder's code of RK algorithm: // correctly calculates a mod b even if a < 0 function int_mod(int a, int b) { return (a % b + b) % b; } function Rabin_Karp(text[], pattern[]) { // ...

I'm trying to understand why the worst case running time of the Rabin-Karp algorithm is O(nm) and the average case is O(n+m). Can someone help me with that?

I posed a question to Stackoverflow a few weeks ago about a creating an efficient algorithm to search for a pattern in a large chunk of text. Right now I am using the String function indexOf to do ...

I have generated an string using the following alphabet. {A,C,G,T}. And my string contains more than 10000 characters. I'm searching the following patterns in it. ATGGA TGGAC CCGT I have asked...

What are the available string matching algorithms besides Knuth-Morris-Pratt, Rabin-Karp and likes of it?

I've been trying to implement Rabin-Karp algorithm in Java. I have hard time computing the rolling hash value in constant time. I've found one implementation at http://algs4.cs.princeton.edu/53subs...

I've seen this Rabin Karp string matching algorithm in the forums on the website and I'm interested in trying to implement it but I was wondering If anyone could tell me why the variables ulong Q a...

I am interested in implementing the Rabin-Karp algorithm to search for sub strings as stated on wiki: http://en.wikipedia.org/wiki/Rabin-Karp_string_search_algorithm. Not for homework, but for self...

i am using Rabin–Karp algorithm to check plagiarism for any two source code files so firstly i simply implement its algorithm in c # here its code but its average and best case running time is O(n...

I've been working on a Rabin-Karp string matching function in C++ and I'm not getting any results out of it. I have a feeling that I'm not computing some of the values correctly, but I don't know w...

I'm looking to use a rolling hash function so I can take hashes of n-grams of a very large string. For example: "stackoverflow", broken up into 5 grams would be: "stack", "tacko", "ackov", "ck...

According to the wikipedia entry on Rabin-Karp string matching algorithm, it can be used to look for several different patterns in a string at the same time while still maintaining linear complexit...