Witam
Chciałbym przetestować algorytm Kruskala znaleziony w internecie. Dopiero uczę się programowania i nie wiem jak poradzić sobie z tym błędem.
The type or namespace name 'Point' could not be found (are you missing a using directive or an assembly reference?)
Znajduję sie on w linijce :
public Kruskal(Point[] points)
Kod:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace ConsoleApplication12
{
public class Edge
{
public double Length { get; private set; }
public int Point1 { get; private set; }
public int Point2 { get; private set; }
public Edge(int pt1, int pt2, double length)
{
Point1 = pt1;
Point2 = pt2;
Length = length;
}
public override string ToString()
{
return String.Format("({0}-{1})={2:0.00}", Point1, Point2, Length);
}
}
public class Kruskal
{
public Edge[] Result { get; private set; }
public double Span { get; private set; }
public Kruskal(Point[] points)
{
int edgesArrayLength = 0;
for (int i = points.Length - 1; i > 0; i--)
edgesArrayLength += i;
Edge[] edges = new Edge[edgesArrayLength];
for (int i = 0, index = 0; i < points.Length; i++)
for (int j = i + 1; j < points.Length; j++)
{
int dx = points[i].X - points[j].X;
int dy = points[i].Y - points[j].Y;
edges[index] = new Edge(i, j, Math.Sqrt(dx * dx + dy * dy));
index++;
}
var sortEdges = edges.OrderBy(a => a.Length);
int[] sets = new int[points.Length];
Result = new Edge[points.Length - 1];
int processedEdges = 0;
foreach (var edge in sortEdges)
{
if (processedEdges == points.Length - 1)
break;
if (sets[edge.Point1] == 0 || sets[edge.Point1] != sets[edge.Point2])
{
Result[processedEdges] = edge;
Span += edge.Length;
processedEdges++;
if (sets[edge.Point1] != 0 || sets[edge.Point2] != 0)
{
//To te zbiory będą łączone w jeden
int set1 = sets[edge.Point1];
int set2 = sets[edge.Point2];
for (int i = 0; i < points.Length; i++)
if (sets[i] != 0 && (sets[i] == set1 || sets[i] == set2))
sets[i] = processedEdges;
}
sets[edge.Point1] = processedEdges;
sets[edge.Point2] = processedEdges;
}
}
}
}
class Program
{
static void Main(string[] args)
{
Point[] points = new Point[]
{
new Point(0,0),
new Point(3,0),
new Point(5,0),
new Point(0,1),
new Point(2,1),
new Point(5,1),
new Point(1,2),
new Point(3,2),
new Point(2,4),
new Point(6,4)
};
var kruskal = new Kruskal(points);
Console.WriteLine(String.Format("Rozpiętość {0:0.00}", kruskal.Span));
for (int i = 0; i < kruskal.Result.Length; i++)
Console.WriteLine(kruskal.Result[i]);
}
}
}
Z góry dziękuję za pomoc.
Pozdrawiam
C# 
