public static int power ( int x , int y ) {
  int count = 0 ;
  int z = y ;
  while ( x >= z ) {
    count += ( x / z ) ;
    z *= y ;
  }
  return count ;
}

public static int power ( int x , int y ) { int count = 0 ; int z = y ; while ( x >= z ) { count += ( x / z ) ; z *= y ; } return count ; }
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