Java Euclidean Distance euclideanDistance(double[] p, double[] q)

Description

This returns the distance of two vectors sum(i=1,n) (q_i - p_i)^2

License

Apache License

Parameter

Parameter	Description
p	the first vector
q	the second vector

Return

the distance between two vectors

Declaration

public static double euclideanDistance(double[] p, double[] q) 

Method Source Code

//package com.java2s;
/*-// w ww.  j  ava  2  s.  com
 *
 *  * Copyright 2015 Skymind,Inc.
 *  *
 *  *    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 {
    /**
     * This returns the distance of two vectors
     * sum(i=1,n)   (q_i - p_i)^2
     * @param p the first vector
     * @param q the second vector
     * @return the distance between two vectors
     */
    public static double euclideanDistance(double[] p, double[] q) {

        double ret = 0;
        for (int i = 0; i < p.length; i++) {
            double diff = (q[i] - p[i]);
            double sq = Math.pow(diff, 2);
            ret += sq;
        }
        return ret;

    }

    /**
     * This returns the distance of two vectors
     * sum(i=1,n)   (q_i - p_i)^2
     * @param p the first vector
     * @param q the second vector
     * @return the distance between two vectors
     */
    public static double euclideanDistance(float[] p, float[] q) {

        double ret = 0;
        for (int i = 0; i < p.length; i++) {
            double diff = (q[i] - p[i]);
            double sq = Math.pow(diff, 2);
            ret += sq;
        }
        return ret;

    }
}

Related

1. EuclideanDistance(double xSource, double ySource, double xTarget, double yTarget)
2. euclideanDistance(double[] a, double[] b)
3. euclideanDistance(double[] coord1, double[] coord2)
4. euclideanDistance(double[] data, double[] pattern)
5. euclideanDistance(double[] l1, double[] l2, boolean weighted)
6. euclideanDistance(double[] vector)
7. euclideanDistance(double[] vector1, double[] vector2)
8. euclideanDistance(float[] points, int p1, int p2, boolean isDisp, double width, double height)
9. euclideanDistance(int i0, int j0, int i1, int j1)