drupol\phpermutations\Generators\Permutations

Complexity

Total Complexity

4

Size/Duplication

Total Lines	20
Duplicated Lines	0 %

Coupling/Cohesion

Dependencies

0

Test Coverage

Coverage

100%

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	generator()	0	11	4

<?php

namespace drupol\phpermutations\Generators;

/**
 * Class Permutations.
 *
 * @package drupol\phpermutations\Generators
 */
class Permutations {

  /**
   * @param $data
   *
   * @return \Generator
   */
  public function generator($data) {
    if (count($data) <= 1) {
      yield $data;
    } else {
      foreach (range(0, count($data) - 1) as $i) {
        foreach ($this->generator(array_slice($data, 1)) as $item) {
          yield array_merge(array_slice($item, 0, $i), array_slice($data, 0, 1), array_slice($item, $i));
        }
      }
    }
  }

}