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<?php function sample(int $val, int $min, int $max) { $listLength = $max - $min + 1; $key = (($val % $listLength)) % $listLength; if ($key < 0) { $key = $listLength + ($key % $listLength); } return $min + $key; } // ?????? foreach (range(-10, 5) as $i) echo $i .'='. sample($i, -10, 10) . PHP_EOL;
Output for git.master, git.master_jit, rfc.property-hooks
-10=1 -9=2 -8=3 -7=4 -6=5 -5=6 -4=7 -3=8 -2=9 -1=10 0=-10 1=-9 2=-8 3=-7 4=-6 5=-5

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