Nihilist Postmodern Mistake

    id-permutations
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    1.0.6 • Public • Published

    id-permutations

    Blazing fast algorithms for generating a list of permutations for a given id, or the id from its corresponding permutation.

    Example

    const N_POSITIONS = 10;
    const {
      getPermutationsFromId,
      getIdFromPermutations,
    } = require('id-permutations')(N_POSITIONS);
     
    getPermutationsFromId(0);       // => [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]
    getPermutationsFromId(1); // => [1, 0, 2, 3, 4, 5, 6, 7, 8, 9]
    getPermutationsFromId(2); // => [2, 0, 1, 3, 4, 5, 6, 7, 8, 9]
    getPermutationsFromId(3628799); // => [9, 8, 7, 6, 5, 4, 3, 2, 1, 0]
     
    getIdFromPermutations([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]); // => 0
    getIdFromPermutations([1, 0, 2, 3, 4, 5, 6, 7, 8, 9]); // => 1
    getIdFromPermutations([2, 0, 1, 3, 4, 5, 6, 7, 8, 9]); // => 2
    getIdFromPermutations([9, 8, 7, 6, 5, 4, 3, 2, 1, 0]); // => 3628799

    Keywords

    none

    Install

    npm i id-permutations

    DownloadsWeekly Downloads

    1

    Version

    1.0.6

    License

    MIT

    Unpacked Size

    18.4 kB

    Total Files

    9

    Last publish

    Collaborators

    • josepot