Euclidean.cs

usingSystem;
usingSystem.Linq;

namespaceAlgorithms.LinearAlgebra.Distances;

/// <summary>
/// Implementation for Euclidean distance.
/// </summary>
publicstaticclassEuclidean
{
/// <summary>
/// Calculate Euclidean distance for two N-Dimensional points.
/// </summary>
/// <param name="point1">First N-Dimensional point.</param>
/// <param name="point2">Second N-Dimensional point.</param>
/// <returns>Calculated Euclidean distance.</returns>
publicstaticdoubleDistance(double[]point1,double[]point2)
{
if(point1.Length!=point2.Length)
{
thrownewArgumentException("Both points should have the same dimensionality");
}

// distance = sqrt((x1-y1)^2 + (x2-y2)^2 + ... + (xn-yn)^2)
returnMath.Sqrt(point1.Zip(point2,(x1,x2)=>(x1-x2)*(x1-x2)).Sum());
}
}