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September Morn Update

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Ingy döt Net 2019-09-12 10:33:56 -07:00
parent 4e2d22a71d
commit aac6731f2c
6856 changed files with 141342 additions and 21127 deletions
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18
Task/Run-length-encoding/PHP/run-length-encoding.php
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@ -1,12 +1,18 @@
<?php
function encode($str) {
return preg_replace('/(.)\1*/e', 'strlen($0) . $1', $str);
function encode($str)
{
return preg_replace_callback('/(.)\1*/', function ($match) {
return strlen($match[0]) . $match[1];
}, $str);
}
function decode($str) {
return preg_replace('/(\d+)(\D)/e', 'str_repeat($2, $1)', $str);
function decode($str)
{
return preg_replace_callback('/(\d+)(\D)/', function($match) {
return str_repeat($match[2], $match[1]);
}, $str);
}
echo encode('WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW'), "\n";
echo decode('12W1B12W3B24W1B14W'), "\n";
echo encode('WWWWWWWWWWWWBWWWWWWWWWWWWBBBWWWWWWWWWWWWWWWWWWWWWWWWBWWWWWWWWWWWWWW'), PHP_EOL;
echo decode('12W1B12W3B24W1B14W'), PHP_EOL;
?>