Giter VIP home page Giter VIP logo

path-pattern-matcher's Introduction

Path-Pattern-Matcher

This module takes pattern and path data from stdin and prints best matching pattern or NO MATCH to stdout for each path.

Matches are ordered based on the following parameters.

  1. Least wildcard symbol count is preferred
  2. If there is a tie for #1, match with furthest right, left most wildcard preferred
  3. If the wildcards have the same indices, contiue looking at the next furthest right wildcard and apply #2

Complexity

  1. The time complexity of this algorithm is O(n^2), n being the larger of the count of patterns and the count of paths, and the length of the patterns and paths being constant. The space complexity is O(n) because copies are made of the paths and patterns.
  2. Given hundreds of thousands of patterns and paths, this program would probably break. There is definitely a faster solution. One approach to making lookups faster in cases where there are similar patterns would be to store the patterns in a trie. Other approaches could use dynamic programming, recursion with memoization, or a distributed system.

To Run

cat input_file | python get_best_matches.py > output_file

path-pattern-matcher's People

Contributors

redslug avatar

Watchers

 avatar

Recommend Projects

  • React photo React

    A declarative, efficient, and flexible JavaScript library for building user interfaces.

  • Vue.js photo Vue.js

    ๐Ÿ–– Vue.js is a progressive, incrementally-adoptable JavaScript framework for building UI on the web.

  • Typescript photo Typescript

    TypeScript is a superset of JavaScript that compiles to clean JavaScript output.

  • TensorFlow photo TensorFlow

    An Open Source Machine Learning Framework for Everyone

  • Django photo Django

    The Web framework for perfectionists with deadlines.

  • D3 photo D3

    Bring data to life with SVG, Canvas and HTML. ๐Ÿ“Š๐Ÿ“ˆ๐ŸŽ‰

Recommend Topics

  • javascript

    JavaScript (JS) is a lightweight interpreted programming language with first-class functions.

  • web

    Some thing interesting about web. New door for the world.

  • server

    A server is a program made to process requests and deliver data to clients.

  • Machine learning

    Machine learning is a way of modeling and interpreting data that allows a piece of software to respond intelligently.

  • Game

    Some thing interesting about game, make everyone happy.

Recommend Org

  • Facebook photo Facebook

    We are working to build community through open source technology. NB: members must have two-factor auth.

  • Microsoft photo Microsoft

    Open source projects and samples from Microsoft.

  • Google photo Google

    Google โค๏ธ Open Source for everyone.

  • D3 photo D3

    Data-Driven Documents codes.