Java List Product dotProduct(List v1, List v2)

Description

dot Product

License

Apache License

Declaration

private static Double dotProduct(List<Double> v1, List<Double> v2) 

Method Source Code

//package com.java2s;
/**/*from   w w w. java  2 s. c o  m*/
* Copyright (C) 2014 Kenny Bastani
*
* 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.
*/

import java.util.*;

public class Main {
    private static Double dotProduct(List<Double> v1, List<Double> v2) {
        if (v1.size() != v2.size())
            throw new IllegalArgumentException("Vectors must be of equal length.");

        Double result = 0.0;
        for (int i = 0; i < v1.size(); i++) {
            result = result + (v1.get(i) * v2.get(i));
        }

        return result;
    }
}

Related

1. dotProductValue(List oper1, List oper2)
2. getProductsFromString(List projects)
3. product(List> lists)
4. scalarProduct(List a, List b)