static int minCost ( int A [ ] , int n ) {
  int cost = 0 ;
  Arrays . sort ( A ) ;
  int K = A [ n / 2 ] ;
  for ( int i = 0 ;
  i < n ;
  ++ i ) cost += Math . abs ( A [ i ] - K ) ;
  if ( n % 2 == 0 ) {
    int tempCost = 0 ;
    K = A [ ( n / 2 ) - 1 ] ;
    for ( int i = 0 ;
    i < n ;
    ++ i ) tempCost += Math . abs ( A [ i ] - K ) ;
    cost = Math . min ( cost , tempCost ) ;
  }
  return cost ;
}

static int minCost ( int A [ ] , int n ) { int cost = 0 ; Arrays . sort ( A ) ; int K = A [ n / 2 ] ; for ( int i = 0 ; i < n ; ++ i ) cost += Math . abs ( A [ i ] - K ) ; if ( n % 2 == 0 ) { int tempCost = 0 ; K = A [ ( n / 2 ) - 1 ] ; for ( int i = 0 ; i < n ; ++ i ) tempCost += Math . abs ( A [ i ] - K ) ; cost = Math . min ( cost , tempCost ) ; } return cost ; }
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