Question

一道入门c#题，紧急求助

You should create a program that manages a set of points in 3-dimensional space. Each point should be set using. x, y and z values, and a unique label (a string). It should be possible to add new sections as needed. It shall not be possible to add points with the same label. It should be easy to print all the points. You must create a struct called Point and a class called My Locations. Point shall contain x, y, z (use double) and a label (string). My points shall contain a point table with size similar to that submitted to the constructor to My Locations. Members of the Point class should be private and could be changed using. properties. Objects of type My Locations will be indexed as it were a table. You should use an index. The following shall be possible from a test program: class Test Program { static void Main (string [] args) { Point p1 = new Point (0, 0, 0, "Sola"); Point p2 = new Point (5, -6, 7, "Earth"); // Prints single point: Console.WriteLine (p1); Console.WriteLine (); 题目太长发布下，剩下部分只好截图:
发现这格式没法看，直接整个截图吧。。。

谢谢大家！





Answer 1

•  大概思路这样吧，细节上楼主要自己修改下。

• class MyLocation
      {
          private Point[] points;
          private int _max;
          public MyLocation(int max)
          {
              points = new Point[max];
          }
          public Point this[int index]
          {
              get
              {
                  if (points != null && index >= 0 && index<_max)
                  {
                      return points[index];
                  }
                  return null;
              }
              set
              {
                  if (points != null && index >= 0 && index < _max)
                  {
                      foreach (Point p in points)
                      {
                          if(p!=null && p.Name==value.Name)
                          {
                              Console.WriteLine("this will give an error message");
                              return;
                          }
                      }
                      points[index] = value;
                  }
              }
          }
          public string ToString()
          {
              StringBuilder sb = new StringBuilder();
              if (points != null)
              {
                  foreach (Point p in points)
                  {
                      sb.AppendLine(p.ToString());
                  }
              }
              return sb.ToString();
          }
      }
      class Point
      {
          public double X
          { get; set; }
          public double Y
          { get; set; }
          public double Z
          { get; set; }
          public string Name
          {
              get;
              set;
          }
          public Point(double x, double y, double z, string name)
          {
              X = x;
              Y = y;
              Z = z;
              Name = name;
          }
          public string ToString()
          {
              return String.Format("{0}:[{1} {2} {3}]", Name, X, Y, Z);
          }
      }

追问

可以帮忙写出完整代码么，非常感谢。。。