static public double rosenbrock(double[] x) {

    double sum = 0.0;

    for (int i = 0; i < (x.length - 1); i++) {
      double temp1 = (x[i] * x[i]) - x[i + 1];
      double temp2 = x[i] - 1.0;
      sum += (100.0 * temp1 * temp1) + (temp2 * temp2);
    }

    return (sum);
  }
static public double rosenbrock ( double [ ] x ) { double sum = 0.0 ; for ( int i = 0 ; i < ( x . length - 1 ) ; i ++ ) { double temp1 = ( x [ i ] * x [ i ] ) - x [ i + 1 ] ; double temp2 = x [ i ] - 1.0 ; sum += ( 100.0 * temp1 * temp1 ) + ( temp2 * temp2 ) ; } return ( sum ) ; }
Rosenbrock's function