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    rpn-infix-postfix

    1.0.5 • Public • Published

    RPN


    Jan Łukasiewicz (Inventor of RPN)

    Infix to postfix

    Reverse Polish notation (RPN), also known as Polish postfix notation or simply postfix notation, is a mathematical notation in which operators follow their operands, in contrast to Polish notation (PN), in which operators precede their operands. It does not need any parentheses as long as each operator has a fixed number of operands. The description "Polish" refers to the nationality of logician Jan Łukasiewicz, who invented Polish notation in 1924     -Wikipedia


    Npm

    Downloading

    $npm i rpn-infix-postfix

    Usage

    const {  
      infixToPostfix,
      postfixSolver,
      solve,
      Stack }  = require('rpn-infix-postfix');
     
    console.log(solve('1 + 2 * 9' )); // result => 19
    console.log(
      infixToPostfix('1*(4-2)', new Stack(100)).join('')
    ); // result => 142-*

    Downloading (via git)

    git clone https://github.com/SC0d3r/RPN-infix-to-postfix.git RPN
    

    cli Usage

    after cloning go to directory and then run the following command

    $node index.js '1* ( 2 + 3)'
     
        > 5 [result]

    only postfix version

    $node index.js '1* ( 2 + 3)' -postfix
     
       > 123+* [result]

    Test

    run tests with

    $npm test

    Install

    npm i rpn-infix-postfix

    DownloadsWeekly Downloads

    7

    Version

    1.0.5

    License

    MIT

    Last publish

    Collaborators

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