Combinations::generator() - Code Metrics - Inspection of "#2: Enable grumphp." - drupol/phpermutations - Measure and Improve Code Quality continuously with Scrutinizer

Completed

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by Pol

created 2017-03-29 13:42 UTC

Combinations::generator() A

↳ Parent: Combinations

Complexity

Conditions	1
Paths	1

Size

Total Lines	3
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	2
CRAP Score	1

Importance

Changes

Metric	Value
dl	0
loc	3
ccs	2
cts	2
cp	1
rs	10
c	0
b	0
f	0
cc	1
eloc	2
nc	1
nop	0
crap	1

<?php

namespace drupol\phpermutations\Generators;

use drupol\phpermutations\Iterators\Combinations as CombinationsIterator;

/**
 * Class Combinations.
 *
 * @package drupol\phpermutations\Generators
 *
 * @author  Mark Wilson <[email protected]>
 */
class Combinations extends CombinationsIterator {

  /**
   * Alias of the get() method.
   *
   * @return \Generator
   *   The prime generator.
   */
  public function generator() {
    return $this->get($this->getDataset(), $this->getLength());
  }

  /**
   * The generator.
   *
   * @param array $dataset
   *   The dataset.
   *
   * @codingStandardsIgnoreStart
   * @return \Generator
   * @codingStandardsIgnoreEnd
   */
  protected function get(array $dataset, $length) {
    $originalLength  = count($dataset);
    $remainingLength = $originalLength - $length + 1;
    for ($i = 0; $i < $remainingLength; $i++) {
      $current = $dataset[$i];
      if ($length === 1) {
        yield [$current];
      } else {
        $remaining = array_slice($dataset, $i + 1);
        foreach ($this->get($remaining, $length - 1) as $permutation) {
          array_unshift($permutation, $current);
          yield $permutation;
        }
      }
    }
  }

  /**
   * Convert the generator into an array.
   *
   * @return array
   *   The elements.
   */
  public function toArray() {
    $data = array();

    foreach ($this->generator() as $value) {
      $data[] = $value;
    }

    return $data;
  }

}


1		<?php
2
3		namespace drupol\phpermutations\Generators;
4
5		use drupol\phpermutations\Iterators\Combinations as CombinationsIterator;
6
7		/**
8		* Class Combinations.
9		*
10		* @package drupol\phpermutations\Generators
11		*
12		* @author Mark Wilson <[email protected]>
13		*/
14		class Combinations extends CombinationsIterator {
15
16		/**
17		* Alias of the get() method.
18		*
19		* @return \Generator
20		* The prime generator.
21		*/
22	2	public function generator() {
23	2	return $this->get($this->getDataset(), $this->getLength());
24		}
25
26		/**
27		* The generator.
28		*
29		* @param array $dataset
30		* The dataset.
31		*
32		* @codingStandardsIgnoreStart
33		* @return \Generator
34		* @codingStandardsIgnoreEnd
35		*/
36	2	protected function get(array $dataset, $length) {
37	2	$originalLength = count($dataset);
38	2	$remainingLength = $originalLength - $length + 1;
39	2	for ($i = 0; $i < $remainingLength; $i++) {
40	2	$current = $dataset[$i];
41	2	if ($length === 1) {
42	2	yield [$current];
43	2	} else {
44	2	$remaining = array_slice($dataset, $i + 1);
45	2	foreach ($this->get($remaining, $length - 1) as $permutation) {
46	2	array_unshift($permutation, $current);
47	2	yield $permutation;
48	2	}
49		}
50	2	}
51	2	}
52
53		/**
54		* Convert the generator into an array.
55		*
56		* @return array
57		* The elements.
58		*/
59	2	public function toArray() {
60	2	$data = array();
61
62	2	foreach ($this->generator() as $value) {
63	2	$data[] = $value;
64	2	}
65
66	2	return $data;
67		}
68
69		}
70

drupol / phpermutations

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Combinations::generator() A

Complexity

Size

Duplication

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