@@ -10,31 +10,31 @@ discard block |
||
10 | 10 | class ShortestCommonSuperstring |
11 | 11 | { |
12 | 12 | /** |
13 | - * @var integer Affix length for current iteration |
|
14 | - */ |
|
13 | + * @var integer Affix length for current iteration |
|
14 | + */ |
|
15 | 15 | protected $len; |
16 | 16 | |
17 | 17 | /** |
18 | - * @var string[] Prefixes of current length |
|
19 | - */ |
|
18 | + * @var string[] Prefixes of current length |
|
19 | + */ |
|
20 | 20 | protected $prefixes; |
21 | 21 | |
22 | 22 | /** |
23 | - * @var string[] Strings being merged |
|
24 | - */ |
|
23 | + * @var string[] Strings being merged |
|
24 | + */ |
|
25 | 25 | protected $strings; |
26 | 26 | |
27 | 27 | /** |
28 | - * @var string[] Suffixes of current length |
|
29 | - */ |
|
28 | + * @var string[] Suffixes of current length |
|
29 | + */ |
|
30 | 30 | protected $suffixes; |
31 | 31 | |
32 | 32 | /** |
33 | - * Get the shortest string that contains all given strings |
|
34 | - * |
|
35 | - * @param string[] $strings |
|
36 | - * @return string |
|
37 | - */ |
|
33 | + * Get the shortest string that contains all given strings |
|
34 | + * |
|
35 | + * @param string[] $strings |
|
36 | + * @return string |
|
37 | + */ |
|
38 | 38 | public function getShortest(array $strings): string |
39 | 39 | { |
40 | 40 | $this->strings = array_unique($strings); |
@@ -56,8 +56,8 @@ discard block |
||
56 | 56 | } |
57 | 57 | |
58 | 58 | /** |
59 | - * Compare given strings |
|
60 | - */ |
|
59 | + * Compare given strings |
|
60 | + */ |
|
61 | 61 | protected static function compareStrings(string $a, string $b): int |
62 | 62 | { |
63 | 63 | $aLen = strlen($a); |
@@ -73,21 +73,21 @@ discard block |
||
73 | 73 | } |
74 | 74 | |
75 | 75 | /** |
76 | - * Return the list of keys pointing to strings whose prefix is identical to their suffix |
|
77 | - * |
|
78 | - * @return integer[] |
|
79 | - */ |
|
76 | + * Return the list of keys pointing to strings whose prefix is identical to their suffix |
|
77 | + * |
|
78 | + * @return integer[] |
|
79 | + */ |
|
80 | 80 | protected function getIdenticalAffixKeys(): array |
81 | 81 | { |
82 | 82 | return array_keys(array_intersect_assoc($this->prefixes, $this->suffixes)); |
83 | 83 | } |
84 | 84 | |
85 | 85 | /** |
86 | - * Match and merge a string by key |
|
87 | - * |
|
88 | - * @param integer $leftKey Left string's key |
|
89 | - * @return bool Whether a match was found and strings merged |
|
90 | - */ |
|
86 | + * Match and merge a string by key |
|
87 | + * |
|
88 | + * @param integer $leftKey Left string's key |
|
89 | + * @return bool Whether a match was found and strings merged |
|
90 | + */ |
|
91 | 91 | protected function mergeString(int $leftKey): bool |
92 | 92 | { |
93 | 93 | $suffix = $this->suffixes[$leftKey]; |
@@ -105,8 +105,8 @@ discard block |
||
105 | 105 | } |
106 | 106 | |
107 | 107 | /** |
108 | - * Merge two stored strings together at current affix length |
|
109 | - */ |
|
108 | + * Merge two stored strings together at current affix length |
|
109 | + */ |
|
110 | 110 | protected function mergeStringPair(int $leftKey, int $rightKey): void |
111 | 111 | { |
112 | 112 | $this->strings[$leftKey] .= substr($this->strings[$rightKey], $this->len); |
@@ -115,8 +115,8 @@ discard block |
||
115 | 115 | } |
116 | 116 | |
117 | 117 | /** |
118 | - * Merge all stored strings using current affix length |
|
119 | - */ |
|
118 | + * Merge all stored strings using current affix length |
|
119 | + */ |
|
120 | 120 | protected function mergeStrings(): void |
121 | 121 | { |
122 | 122 | $this->storeAffixes(); |
@@ -133,11 +133,11 @@ discard block |
||
133 | 133 | } |
134 | 134 | |
135 | 135 | /** |
136 | - * Match and merge strings from given group |
|
137 | - * |
|
138 | - * @param integer[] $keys List of keys |
|
139 | - * @return void |
|
140 | - */ |
|
136 | + * Match and merge strings from given group |
|
137 | + * |
|
138 | + * @param integer[] $keys List of keys |
|
139 | + * @return void |
|
140 | + */ |
|
141 | 141 | protected function mergeStringsGroup(array $keys): void |
142 | 142 | { |
143 | 143 | foreach ($keys as $leftKey) |
@@ -153,8 +153,8 @@ discard block |
||
153 | 153 | } |
154 | 154 | |
155 | 155 | /** |
156 | - * Remove empty strings from the list |
|
157 | - */ |
|
156 | + * Remove empty strings from the list |
|
157 | + */ |
|
158 | 158 | protected function removeEmptyStrings(): void |
159 | 159 | { |
160 | 160 | if (end($this->strings) === '') |
@@ -164,8 +164,8 @@ discard block |
||
164 | 164 | } |
165 | 165 | |
166 | 166 | /** |
167 | - * Remove fully-overlapping strings from the list |
|
168 | - */ |
|
167 | + * Remove fully-overlapping strings from the list |
|
168 | + */ |
|
169 | 169 | protected function removeFullyOverlappingStrings(): void |
170 | 170 | { |
171 | 171 | $strlen = array_map('strlen', $this->strings); |
@@ -192,8 +192,8 @@ discard block |
||
192 | 192 | } |
193 | 193 | |
194 | 194 | /** |
195 | - * Reset the keys in the string list to remove the gaps |
|
196 | - */ |
|
195 | + * Reset the keys in the string list to remove the gaps |
|
196 | + */ |
|
197 | 197 | protected function resetKeys(): void |
198 | 198 | { |
199 | 199 | end($this->strings); |
@@ -204,18 +204,18 @@ discard block |
||
204 | 204 | } |
205 | 205 | |
206 | 206 | /** |
207 | - * Sort the stored strings |
|
208 | - */ |
|
207 | + * Sort the stored strings |
|
208 | + */ |
|
209 | 209 | protected function sortStrings(): void |
210 | 210 | { |
211 | 211 | usort($this->strings, [__CLASS__, 'compareStrings']); |
212 | 212 | } |
213 | 213 | |
214 | 214 | /** |
215 | - * Capture and stored affixes of current length |
|
216 | - * |
|
217 | - * Will only store affixes from strings that are longer than current affix length |
|
218 | - */ |
|
215 | + * Capture and stored affixes of current length |
|
216 | + * |
|
217 | + * Will only store affixes from strings that are longer than current affix length |
|
218 | + */ |
|
219 | 219 | protected function storeAffixes(): void |
220 | 220 | { |
221 | 221 | $this->prefixes = []; |