Here you can find the source of sumOfSquares(double[] vector)
static public double sumOfSquares(double[] vector)
//package com.java2s; /**//from w ww . j ava 2s. co m * Copyright 2015, Emory University * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ public class Main { static public double sumOfSquares(double[] vector) { double sum = 0; for (double d : vector) sum += sq(d); return sum; } static public long sq(long l) { return l * l; } static public double sq(double d) { return d * d; } static public float sq(float f) { return f * f; } }