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Optimize permutations algorithm.

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This commit is contained in:
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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11
src/algorithms/sets/permutations/permutateWithRepetitions.js
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@ -14,13 +14,14 @@ export default function permutateWithRepetitions(
// Init permutations array.
const permutations = [];
// Get smaller permutations.
const smallerPermutations = permutateWithRepetitions(
permutationOptions,
permutationLength - 1,
);
// Go through all options and join it to the smaller permutations.
permutationOptions.forEach((currentOption) => {
const smallerPermutations = permutateWithRepetitions(
permutationOptions,
permutationLength - 1,
);
smallerPermutations.forEach((smallerPermutation) => {
permutations.push([currentOption].concat(smallerPermutation));
});