Light-based string matching

  • Authors:
  • Mihai Oltean

  • Affiliations:
  • Department of Computer Science, Faculty of Mathematics and Computer Science, Babeş-Bolyai University, Cluj-Napoca, Romania 400084

  • Venue:
  • Natural Computing: an international journal
  • Year:
  • 2009

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Abstract

String matching is a very important problem in computer science. The problem consists in finding all the occurrences of a pattern P of length m in a text T of length n. We describe a special device which can do string matching by performing n−m + 1 text-to-pattern comparisons. The proposed device uses light and optical filters for performing computations. Two physical implementations are proposed. One of them uses colored glass and the other one uses polarizing filters. The strengths and the weaknesses of each method are deeply discussed.