Here you can find the source of euclideanLength(double[] vector)
public static double euclideanLength(double[] vector)
//package com.java2s; //License from project: Open Source License public class Main { public static double euclideanLength(double[] vector) { double x2 = 0; for (double d : vector) { x2 += d * d;/* www . j av a 2 s.co m*/ } return Math.sqrt(x2); } }