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<?php function quicksort($array) { if (count($array) <= 1) { return $array; } $pivot = array_shift($array); // ピボットの選択 $left = $right = array(); foreach ($array as $value) { if ($value < $pivot) { $left[] = $value; } else { $right[] = $value; } } // 左右のデータを再帰的にソートする return array_merge(quicksort($left), array($pivot), quicksort($right)); } $array = array( 6, 4, 3, 7, 8, 5, 2, 9, 1, ); $array = quicksort($array); var_dump($array); // 1, 2, 3, 4, 5, 6, 7, 8, 9
Output for git.master, git.master_jit, rfc.property-hooks
array(9) { [0]=> int(1) [1]=> int(2) [2]=> int(3) [3]=> int(4) [4]=> int(5) [5]=> int(6) [6]=> int(7) [7]=> int(8) [8]=> int(9) }

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