static boolean rightRotationDivisor ( int N ) {
  int lastDigit = N % 10 ;
  int rightRotation = ( int ) ( lastDigit * Math . pow ( 10 , ( int ) ( Math . log10 ( N ) ) ) + Math . floor ( N / 10 ) ) ;
  return ( rightRotation % N == 0 ) ;
}

static boolean rightRotationDivisor ( int N ) { int lastDigit = N % 10 ; int rightRotation = ( int ) ( lastDigit * Math . pow ( 10 , ( int ) ( Math . log10 ( N ) ) ) + Math . floor ( N / 10 ) ) ; return ( rightRotation % N == 0 ) ; }
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