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<?php $matrix = [ [1, 2, 3], [4, 5, 6], [7, 8, 9], ]; function transpose($array) { return array_map(null, ...$array); } function rotate($array) { return array_map(fn(...$col) => array_reverse($col), ...$array); } function display($a) { foreach ($a as $value) { echo implode($value) . PHP_EOL; } echo PHP_EOL;} $matrix = rotate(transpose($matrix)); display($matrix); $matrix = rotate($matrix); display($matrix); $matrix = rotate($matrix); display($matrix); $matrix = rotate($matrix); display($matrix);
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