static float geometricMean ( int [ ] arr , int n ) {
  float sum = 0 ;
  for ( int i = 0 ;
  i < n ;
  i ++ ) sum = sum + ( float ) Math . log ( arr [ i ] ) ;
  sum = sum / n ;
  return ( float ) Math . exp ( sum ) ;
}

static float geometricMean ( int [ ] arr , int n ) { float sum = 0 ; for ( int i = 0 ; i < n ; i ++ ) sum = sum + ( float ) Math . log ( arr [ i ] ) ; sum = sum / n ; return ( float ) Math . exp ( sum ) ; }
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