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<?php $mainNumber = 6; $finalData = []; $operator = '-'; for ($i = 1; $i <= $mainNumber; $i++) { switch ($operator) { case '-': $finalData[] = $mainNumber - $i; $operator = '+'; break; case '+': $finalData[] = $mainNumber + $i; $operator = '-'; break; } } print_r($finalData);
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => 5 [1] => 8 [2] => 3 [3] => 10 [4] => 1 [5] => 12 )

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