I am currently learning about pattern matching algorithms and have come across these two algorithms. I have the following general ideas: KMP Compares text left-to-right Uses a failure array to s...

Boyer-Moore is probably the fastest non-indexed text-search algorithm known. So I'm implementing it in C# for my Black Belt Coder website. I had it working and it showed roughly the expected perfo...

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...

I'm really trying to understand an example on how to construct a good suffix table for a given pattern. The problem is, I'm unable to wrap my head around it. I've looked at numerous examples, but d...

I'd like to read from a std::istream until a certain sequence of characters is found, i.e., I'd like to implement the following interface: void read_until (std::istream &is, std::string_view n...

I need three fast-on-large-strings functions: fast search, fast search and replace, and fast count of substrings in a string. I have run into Boyer-Moore string searches in C++ and Python, but the...

I understand how the bad character heuristics work. When you find the mismatched letter x, just shift the pattern so the rightmost x in the pattern would be aligned with the x in the string. And it...

Here is my implementation of BMH algorithm (it works like a charm): public static Int64 IndexOf(this Byte[] value, Byte[] pattern) { if (value == null) throw new ArgumentNullException("value"); ...

I have been trying to understand shift rules in Boyer–Moore string search algorithm but haven't understood them. I read here on wikipedia but that is too complex ! It will be of great help if som...

Is there any faster way to search for a string in a file?

I'm about to implement a variation of the Boyer-Moore pattern matching algorithm (the Sunday algorithm to be specific) and I was asking myself: What is my alphabet size? Does it depend on the enco...