@@ -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); |
@@ -54,8 +54,8 @@ discard block |
||
| 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 |
||
| 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 |
||
| 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 |
||
| 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 |
||
| 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 |
||
| 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 $leftKey) |
@@ -160,8 +160,8 @@ discard block |
||
| 160 | 160 | } |
| 161 | 161 | |
| 162 | 162 | /** |
| 163 | - * Remove empty strings from the list |
|
| 164 | - */ |
|
| 163 | + * Remove empty strings from the list |
|
| 164 | + */ |
|
| 165 | 165 | protected function removeEmptyStrings(): void |
| 166 | 166 | { |
| 167 | 167 | if (end($this->strings) === '') |
@@ -171,8 +171,8 @@ discard block |
||
| 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', $this->strings); |
@@ -199,8 +199,8 @@ discard block |
||
| 199 | 199 | } |
| 200 | 200 | |
| 201 | 201 | /** |
| 202 | - * Reset the keys in the string list to remove the gaps |
|
| 203 | - */ |
|
| 202 | + * Reset the keys in the string list to remove the gaps |
|
| 203 | + */ |
|
| 204 | 204 | protected function resetKeys(): void |
| 205 | 205 | { |
| 206 | 206 | end($this->strings); |
@@ -211,18 +211,18 @@ discard block |
||
| 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 = []; |