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Optimize permutations algorithm.

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Oleksii Trekhleb 2018-12-14 13:56:15 +02:00
parent d9946c1249
commit 59c6f4df13
1 changed files with 6 additions and 5 deletions
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5
src/algorithms/sets/permutations/permutateWithRepetitions.js
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@ -14,13 +14,14 @@ export default function permutateWithRepetitions(
// Init permutations array. // Init permutations array.
const permutations = []; const permutations = [];
// Go through all options and join it to the smaller permutations. // Get smaller permutations.
permutationOptions.forEach((currentOption) => {
const smallerPermutations = permutateWithRepetitions( const smallerPermutations = permutateWithRepetitions(
permutationOptions, permutationOptions,
permutationLength - 1, permutationLength - 1,
); );
// Go through all options and join it to the smaller permutations.
permutationOptions.forEach((currentOption) => {
smallerPermutations.forEach((smallerPermutation) => { smallerPermutations.forEach((smallerPermutation) => {
permutations.push([currentOption].concat(smallerPermutation)); permutations.push([currentOption].concat(smallerPermutation));
}); });