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Divide by 3 without division operation

Code
Diff
  • function dividedByThree(int $number): bool
{
    while (($number = abs($number)) > 10) {
        $number = array_sum(str_split($number));
    }
    
    return in_array($number, [3,6,9]);
}
    • function dividedByThree(int $number): bool
    • {
    • $abs = abs($number);
    • if($abs < 10){
    • return $abs == 3 || $abs == 6 || $abs == 9;
    • while (($number = abs($number)) > 10) {
    • $number = array_sum(str_split($number));
    • }
    • $sum = array_sum(str_split($abs,1));
    • return dividedByThree($sum);
    • return in_array($number, [3,6,9]);
    • }