计算作为数组给出的两个向量的内积

class Main {


  static double innerproduct(int[] x, int[] y) {

    double sum = 0.0;// 来自 时代Java公众号 - N o w J a  v a . c o m

    System.out.println("Dim of vector x:" + x.length + " Dim of vector y:" + y.length);


    for (int i = 0; i < x.length; ++i)

      sum = sum + x[i] * y[i];

    return sum;

  }


  public static void main(String[] args) {

    int dimension = 30;
    /* 
    *来 自
     nowjava.com - 时  代  Java
    */

    int[] v1, v2;


    v1 = new int[dimension];

    v2 = new int[dimension];


    for (int i = 0; i < dimension; i++) {

      v1[i] = (int) (Math.random() * 100); // random int [0,99]

      v2[i] = (