1 | using System;
|
---|
2 |
|
---|
3 | namespace HeuristicLab.Algorithms.DataAnalysis.ContinuedFractionRegression {
|
---|
4 | public class Vector {
|
---|
5 | private double[] _components;
|
---|
6 | private int _nDimensions;
|
---|
7 | public Vector(int dimensions) {
|
---|
8 | _components = new double[dimensions];
|
---|
9 | _nDimensions = dimensions;
|
---|
10 | }
|
---|
11 |
|
---|
12 | public int NDimensions {
|
---|
13 | get { return _nDimensions; }
|
---|
14 | }
|
---|
15 |
|
---|
16 | public double this[int index] {
|
---|
17 | get { return _components[index]; }
|
---|
18 | set { _components[index] = value; }
|
---|
19 | }
|
---|
20 |
|
---|
21 | public double[] Components {
|
---|
22 | get { return _components; }
|
---|
23 | }
|
---|
24 |
|
---|
25 | /// <summary>
|
---|
26 | /// Add another vector to this one
|
---|
27 | /// </summary>
|
---|
28 | /// <param name="v"></param>
|
---|
29 | /// <returns></returns>
|
---|
30 | public Vector Add(Vector v) {
|
---|
31 | if (v.NDimensions != this.NDimensions)
|
---|
32 | throw new ArgumentException("Can only add vectors of the same dimensionality");
|
---|
33 |
|
---|
34 | Vector vector = new Vector(v.NDimensions);
|
---|
35 | for (int i = 0; i < v.NDimensions; i++) {
|
---|
36 | vector[i] = this[i] + v[i];
|
---|
37 | }
|
---|
38 | return vector;
|
---|
39 | }
|
---|
40 |
|
---|
41 | /// <summary>
|
---|
42 | /// Subtract another vector from this one
|
---|
43 | /// </summary>
|
---|
44 | /// <param name="v"></param>
|
---|
45 | /// <returns></returns>
|
---|
46 | public Vector Subtract(Vector v) {
|
---|
47 | if (v.NDimensions != this.NDimensions)
|
---|
48 | throw new ArgumentException("Can only subtract vectors of the same dimensionality");
|
---|
49 |
|
---|
50 | Vector vector = new Vector(v.NDimensions);
|
---|
51 | for (int i = 0; i < v.NDimensions; i++) {
|
---|
52 | vector[i] = this[i] - v[i];
|
---|
53 | }
|
---|
54 | return vector;
|
---|
55 | }
|
---|
56 |
|
---|
57 | /// <summary>
|
---|
58 | /// Multiply this vector by a scalar value
|
---|
59 | /// </summary>
|
---|
60 | /// <param name="scalar"></param>
|
---|
61 | /// <returns></returns>
|
---|
62 | public Vector Multiply(double scalar) {
|
---|
63 | Vector scaledVector = new Vector(this.NDimensions);
|
---|
64 | for (int i = 0; i < this.NDimensions; i++) {
|
---|
65 | scaledVector[i] = this[i] * scalar;
|
---|
66 | }
|
---|
67 | return scaledVector;
|
---|
68 | }
|
---|
69 |
|
---|
70 | /// <summary>
|
---|
71 | /// Compute the dot product of this vector and the given vector
|
---|
72 | /// </summary>
|
---|
73 | /// <param name="v"></param>
|
---|
74 | /// <returns></returns>
|
---|
75 | public double DotProduct(Vector v) {
|
---|
76 | if (v.NDimensions != this.NDimensions)
|
---|
77 | throw new ArgumentException("Can only compute dot product for vectors of the same dimensionality");
|
---|
78 |
|
---|
79 | double sum = 0;
|
---|
80 | for (int i = 0; i < v.NDimensions; i++) {
|
---|
81 | sum += this[i] * v[i];
|
---|
82 | }
|
---|
83 | return sum;
|
---|
84 | }
|
---|
85 |
|
---|
86 | public override string ToString() {
|
---|
87 | string[] components = new string[_components.Length];
|
---|
88 | for (int i = 0; i < components.Length; i++) {
|
---|
89 | components[i] = _components[i].ToString();
|
---|
90 | }
|
---|
91 | return "[ " + string.Join(", ", components) + " ]";
|
---|
92 | }
|
---|
93 | }
|
---|
94 | }
|
---|