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<?php function permutation(array $arr) { while($ele=array_shift($arr)) { $x=$ele; echo $x."\n"; foreach($arr as $rest) { $x.=" $rest"; echo $x."\n"; } } } permutation(array( '120', '140', '200', '210', '220', '7', '9', '14', '18', '20', '25', '32', '39', '50', '80', '90', '100', '140', '160', '180', '200',));

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43.32 ms | 402 KiB | 5 Q