PrimeFactors::rewind() - Code Metrics - Inspection of "Create LICENCE file." - drupol/phpermutations - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Push — master ( fa4893...deeb78 )

by Pol

created 2017-07-17 04:39 UTC

PrimeFactors::rewind() A

↳ Parent: PrimeFactors

Complexity

Conditions	1
Paths	1

Size

Total Lines	4
Code Lines	2

Duplication

Lines	0
Ratio	0 %

Code Coverage

Tests	3
CRAP Score	1

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
dl	0
loc	4
ccs	3
cts	3
cp	1
rs	10
c	1
b	0
f	0
cc	1
eloc	2
nc	1
nop	0
crap	1

<?php

namespace drupol\phpermutations\Iterators;

use drupol\phpermutations\Combinatorics;

/**
 * Class PrimeFactors.
 *
 * @package drupol\phpermutations\Iterators
 */
class PrimeFactors extends Combinatorics implements \Iterator, \Countable
{

  /**
   * The number.
   *
   * @var int
   */
    protected $number;

  /**
   * The key.
   *
   * @var int
   */
    protected $key;

  /**
   * The prime factors.
   *
   * @var int[]
   */
    protected $factors;

  /**
   * {@inheritdoc}
   */
    public function current()
    {
        return current($this->factors);
    }

  /**
   * {@inheritdoc}
   */
    public function next()
    {
        $this->key++;
        next($this->factors);
    }

  /**
   * {@inheritdoc}
   */
    public function key()
    {
        return $this->key;
    }

  /**
   * {@inheritdoc}
   */
    public function valid()
    {
        return isset($this->factors[$this->key()]);
    }

  /**
   * {@inheritdoc}
   */
    public function rewind()
    {
        $this->key = 0;
    }

  /**
   * Count elements of an object.
   *
   * @return int
   *   The number of element.
   */
    public function count()
    {
        return count($this->factors);
    }

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

        for ($this->rewind(); $this->valid(); $this->next()) {
            $data[] = $this->current();
        }

        return $data;
    }

  /**
   * Set the number.
   *
   * @param int $number
   *   The number.
   */
    public function setNumber($number)
    {
        $this->number = $number;
        $this->factors = $this->getFactors($this->getNumber());
    }

  /**
   * Get the number.
   *
   * @return int
   *   The number.
   */
    public function getNumber()
    {
        return intval($this->number);
    }

  /**
   * Compute the prime factors of the number.
   *
   * @return int[]
   *   The factors.
   */
    private function getFactors($number)
    {
        if ($number <= 0) {
            $factors = array();
        }

        for ($i = 2; $i <= $number / $i; $i++) {

            while ($number % $i == 0) {
                $factors[] = $i;
                $number /= $i;
            }
        }

        if ($number > 1) {
            $factors[] = $number;
        }

        return $factors;
    }
}


1			<?php
2
3			namespace drupol\phpermutations\Iterators;
4
5			use drupol\phpermutations\Combinatorics;
6
7			/**
8			* Class PrimeFactors.
9			*
10			* @package drupol\phpermutations\Iterators
11			*/
12			class PrimeFactors extends Combinatorics implements \Iterator, \Countable
13			{
14
15			/**
16			* The number.
17			*
18			* @var int
19			*/
20			protected $number;
21
22			/**
23			* The key.
24			*
25			* @var int
26			*/
27			protected $key;
28
29			/**
30			* The prime factors.
31			*
32			* @var int[]
33			*/
34			protected $factors;
35
36			/**
37			* {@inheritdoc}
38			*/
39	6		public function current()
40			{
41	6		return current($this->factors);
42			}
43
44			/**
45			* {@inheritdoc}
46			*/
47	6		public function next()
48			{
49	6		$this->key++;
50	6		next($this->factors);
51	6		}
52
53			/**
54			* {@inheritdoc}
55			*/
56	6		public function key()
57			{
58	6		return $this->key;
59			}
60
61			/**
62			* {@inheritdoc}
63			*/
64	6		public function valid()
65			{
66	6		return isset($this->factors[$this->key()]);
67			}
68
69			/**
70			* {@inheritdoc}
71			*/
72	6		public function rewind()
73			{
74	6		$this->key = 0;
75	6		}
76
77			/**
78			* Count elements of an object.
79			*
80			* @return int
81			* The number of element.
82			*/
83	6		public function count()
84			{
85	6		return count($this->factors);
86			}
87
88			/**
89			* Convert the iterator into an array.
90			*
91			* @return array
92			* The elements.
93			*/
94	6		public function toArray()
95			{
96	6		$data = array();
97
98	6		for ($this->rewind(); $this->valid(); $this->next()) {
99	6		$data[] = $this->current();
100			}
101
102	6		return $data;
103			}
104
105			/**
106			* Set the number.
107			*
108			* @param int $number
109			* The number.
110			*/
111	6		public function setNumber($number)
112			{
113	6		$this->number = $number;
114	6		$this->factors = $this->getFactors($this->getNumber());
115	6		}
116
117			/**
118			* Get the number.
119			*
120			* @return int
121			* The number.
122			*/
123	6		public function getNumber()
124			{
125	6		return intval($this->number);
126			}
127
128			/**
129			* Compute the prime factors of the number.
130			*
131			* @return int[]
132			* The factors.
133			*/
134	6		private function getFactors($number)
135			{
136	6		if ($number <= 0) {
137			$factors = array();
138			}
139
140	6	View Code Duplication	for ($i = 2; $i <= $number / $i; $i++) {
			0 ignored issues – show Duplication introduced 2017-01-08 16:59 UTC by Report Bug Copy Issue Report This code seems to be duplicated across your project. Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation. You can also find more detailed suggestions in the “Code” section of your repository. Loading history...
141	6		while ($number % $i == 0) {
142	4		$factors[] = $i;
143	4		$number /= $i;
144			}
145			}
146
147	6		if ($number > 1) {
148	4		$factors[] = $number;
149			}
150
151	6		return $factors;
152			}
153			}
154

drupol / phpermutations

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PrimeFactors::rewind() A

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