Java Utililty Methods Array Dot Product

double dotProd(double x[], double y[])
dot Prod

if (x.length != y.length)
 throw new RuntimeException("Arrays must be same size");
double sum = 0;
for (int i = 0; i < x.length; i++)
 sum += x[i] * y[i];
return sum;

double dotprod(double[] xlist, double[] ylist)
dotprod

double result = 0.0;
int size = Math.min(xlist.length, ylist.length);
int n = 0;
for (int i = 0; i < size; i++) {
 result += xlist[i] * ylist[i];
return result;

float dotProd(float[] a, float[] b)
dot Prod

return a[0] * b[0] + a[1] * b[1] + a[2] * b[2];

double dotProduct(double x1, double y1, double x2, double y2)
dot Product

return x1 * x2 + y1 * y2;

double dotProduct(double x1, double y1, double x2, double y2, double x3, double y3)
Return the dot product of the vector (x1, y1)(x2, y2) and the vector (x2, y2)(x3, y3).

double nVx1 = x2 - x1;
double nVy1 = y2 - y1;
double nVx2 = x3 - x2;
double nVy2 = y3 - y2;
double nVMag1 = Math.sqrt(nVx1 * nVx1 + nVy1 * nVy1);
double nVMag2 = Math.sqrt(nVx2 * nVx2 + nVy2 * nVy2);
if ((nVMag1 == 0) || (nVMag2 == 0)) {
 return 1; 
...

double dotProduct(double[] a, double[] b)
Computes the dot product of two vectors.

if (a.length != b.length) {
 throw new ArithmeticException("The length of the vectors does not match!");
} else {
 double sum = 0;
 for (int i = 0; i < a.length; i++) {
 sum += a[i] * b[i];
 return sum;
...

double dotProduct(double[] a, double[] b)
Calculates the dot product between two vectors and returns as double

double dotProduct = 0;
for (int i = 0; i < a.length; i++)
 dotProduct += a[i] * b[i];
return dotProduct;

float dotProduct(double[] a, double[] b)
Returns the dot product between two vectors

if (a.length != b.length) {
 throw new IllegalArgumentException(
 "Error computing dotProduct in Utilities.dotProduct: arrays should have the same length");
float sp = 0;
for (int i = 0; i < a.length; i++) {
 sp += a[i] * b[i];
return sp;

Double dotProduct(Double[] a, Double[] b)
dot Product

return (a[0] * b[0]) + (a[1] * b[1]);

double dotProduct(double[] array, int[] indices, double[] values)
dot Product

double result = 0;
for (int i = 0; i < indices.length; i++) {
 if (indices[i] == -1)
 continue;
 result += array[indices[i]] * values[i];
return result;