@@ -10,31 +10,31 @@ discard block |
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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); |
@@ -54,8 +54,8 @@ discard block |
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54 | 54 | } |
55 | 55 | |
56 | 56 | /** |
57 | - * Compare given strings |
|
58 | - */ |
|
57 | + * Compare given strings |
|
58 | + */ |
|
59 | 59 | protected static function compareStrings(string $a, string $b): int |
60 | 60 | { |
61 | 61 | $aLen = strlen($a); |
@@ -71,10 +71,10 @@ discard block |
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71 | 71 | } |
72 | 72 | |
73 | 73 | /** |
74 | - * Return the list of keys pointing to strings whose prefix is identical to their suffix |
|
75 | - * |
|
76 | - * @return integer[] |
|
77 | - */ |
|
74 | + * Return the list of keys pointing to strings whose prefix is identical to their suffix |
|
75 | + * |
|
76 | + * @return integer[] |
|
77 | + */ |
|
78 | 78 | protected function getIdenticalAffixKeys(): array |
79 | 79 | { |
80 | 80 | $identicalAffixKeys = []; |
@@ -90,11 +90,11 @@ discard block |
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90 | 90 | } |
91 | 91 | |
92 | 92 | /** |
93 | - * Match and merge a string by key |
|
94 | - * |
|
95 | - * @param integer $leftKey Left string's key |
|
96 | - * @return bool Whether a match was found and strings merged |
|
97 | - */ |
|
93 | + * Match and merge a string by key |
|
94 | + * |
|
95 | + * @param integer $leftKey Left string's key |
|
96 | + * @return bool Whether a match was found and strings merged |
|
97 | + */ |
|
98 | 98 | protected function mergeString(int $leftKey): bool |
99 | 99 | { |
100 | 100 | $suffix = $this->suffixes[$leftKey]; |
@@ -112,8 +112,8 @@ discard block |
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112 | 112 | } |
113 | 113 | |
114 | 114 | /** |
115 | - * Merge two stored strings together at current affix length |
|
116 | - */ |
|
115 | + * Merge two stored strings together at current affix length |
|
116 | + */ |
|
117 | 117 | protected function mergeStringPair(int $leftKey, int $rightKey): void |
118 | 118 | { |
119 | 119 | $this->strings[$leftKey] .= substr($this->strings[$rightKey], $this->len); |
@@ -122,8 +122,8 @@ discard block |
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122 | 122 | } |
123 | 123 | |
124 | 124 | /** |
125 | - * Merge all stored strings using current affix length |
|
126 | - */ |
|
125 | + * Merge all stored strings using current affix length |
|
126 | + */ |
|
127 | 127 | protected function mergeStrings(): void |
128 | 128 | { |
129 | 129 | $this->storeAffixes(); |
@@ -140,11 +140,11 @@ discard block |
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140 | 140 | } |
141 | 141 | |
142 | 142 | /** |
143 | - * Match and merge strings from given group |
|
144 | - * |
|
145 | - * @param integer[] $keys List of keys |
|
146 | - * @return void |
|
147 | - */ |
|
143 | + * Match and merge strings from given group |
|
144 | + * |
|
145 | + * @param integer[] $keys List of keys |
|
146 | + * @return void |
|
147 | + */ |
|
148 | 148 | protected function mergeStringsGroup(array $keys): void |
149 | 149 | { |
150 | 150 | foreach ($keys as $leftKey) |
@@ -160,8 +160,8 @@ discard block |
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160 | 160 | } |
161 | 161 | |
162 | 162 | /** |
163 | - * Remove empty strings from the list |
|
164 | - */ |
|
163 | + * Remove empty strings from the list |
|
164 | + */ |
|
165 | 165 | protected function removeEmptyStrings(): void |
166 | 166 | { |
167 | 167 | if (end($this->strings) === '') |
@@ -171,8 +171,8 @@ discard block |
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171 | 171 | } |
172 | 172 | |
173 | 173 | /** |
174 | - * Remove fully-overlapping strings from the list |
|
175 | - */ |
|
174 | + * Remove fully-overlapping strings from the list |
|
175 | + */ |
|
176 | 176 | protected function removeFullyOverlappingStrings(): void |
177 | 177 | { |
178 | 178 | $strlen = array_map('strlen', $this->strings); |
@@ -199,8 +199,8 @@ discard block |
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199 | 199 | } |
200 | 200 | |
201 | 201 | /** |
202 | - * Reset the keys in the string list to remove the gaps |
|
203 | - */ |
|
202 | + * Reset the keys in the string list to remove the gaps |
|
203 | + */ |
|
204 | 204 | protected function resetKeys(): void |
205 | 205 | { |
206 | 206 | end($this->strings); |
@@ -211,18 +211,18 @@ discard block |
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211 | 211 | } |
212 | 212 | |
213 | 213 | /** |
214 | - * Sort the stored strings |
|
215 | - */ |
|
214 | + * Sort the stored strings |
|
215 | + */ |
|
216 | 216 | protected function sortStrings(): void |
217 | 217 | { |
218 | 218 | usort($this->strings, [__CLASS__, 'compareStrings']); |
219 | 219 | } |
220 | 220 | |
221 | 221 | /** |
222 | - * Capture and stored affixes of current length |
|
223 | - * |
|
224 | - * Will only store affixes from strings that are longer than current affix length |
|
225 | - */ |
|
222 | + * Capture and stored affixes of current length |
|
223 | + * |
|
224 | + * Will only store affixes from strings that are longer than current affix length |
|
225 | + */ |
|
226 | 226 | protected function storeAffixes(): void |
227 | 227 | { |
228 | 228 | $this->prefixes = []; |
@@ -1,4 +1,4 @@ |
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1 | -<?php declare(strict_types = 1); |
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1 | +<?php declare(strict_types=1); |
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2 | 2 | |
3 | 3 | /** |
4 | 4 | * @package s9e\ShortestCommonSuperstring |