Sort an array of classes by a variable value.

Question

This is my class:

 public class RareBlock

     {
         public string name;
         public Vector3 blocks;
         public int chance;
     }

I have an array of many instances of this class. How do I sort the array according to the value of chance?

Thanks

Answer 1

Best Answer

Answer by joshpsawyer · Apr 27, 2014 at 04:50 PM

Use the Array.Sort() method that takes a Comparison<T>:

 Array.Sort(myRareBlockArray,
 delegate(RareBlock x, RareBlock y) { return x.chance.CompareTo(y.chance); });

Add comment · Show 12 · Share

joshpsawyer · Apr 27, 2014 at 05:03 PM 1

Share

Also, if you know that you'll always want to sort the RareBlock class in this way, you might implement the IComparable<t> interface... it will simplify your calls, at least.

KellyThomas · Apr 27, 2014 at 05:35 PM 1

Share

Are you using "`Array.Sort()`"? Sort is a static method of the Array type.

KellyThomas · Apr 27, 2014 at 05:49 PM 1

Share

Please post the line of code causing the error

KellyThomas · Apr 27, 2014 at 06:02 PM 1

Share

Please change the first line to:

 Array.Sort(sortedBlockTypes,

KellyThomas · Apr 27, 2014 at 06:18 PM 1

Share

Ok, then you need using System; at the top of your file.

Show more comments

Answer 2

Answer by Cassos · Apr 28, 2020 at 05:39 PM

If anyone needs this in 2020, I created a function for a recent project, sorting and returning an array of custom classes, by first making it into a dictionary:

     public Dialogue[] SortDialogues(Dialogue[] _ds)
     {
         Dictionary<string, Dialogue> _dic = new Dictionary<string, Dialogue>();

         for (int i = 0; i < _ds.Length; i++)
             _dic.Add(_ds[i].id + i, _ds[i]);

         List<string> keys = new List<string>();
         foreach (KeyValuePair<string, Dialogue> _d in _dic)
             keys.Add(_d.Key);
         keys.Sort();

         List<Dialogue> ds = new List<Dialogue>();
         foreach (string s in keys)
                 ds.Add(_dic[s]);

         return ds.ToArray();
     }

Have fun with it! ^^

Greetings, Max

Add comment · Share

Answer 3

Answer by Acegikmo · Apr 28, 2020 at 06:22 PM

Linq version, if you want that!

 myArray = myArray.OrderBy( x => x.chance ).ToArray();

Add comment · Show 1 · Share

Aykutkaraca · Jan 15 at 03:50 PM 0

Share

Good one! thanks. And I figured out if you want the order descending:

 myArray = myArray.OrderByDescending( x => x.chance ).ToArray();

Answer 4

Answer by Adamcbrz · Apr 27, 2014 at 04:49 PM

Here is the link to the documentation for having a compare method with array.sort. From there you can tell it what how to compare.

http://msdn.microsoft.com/en-us/library/cxt053xf(v=vs.110).aspx

Add comment · Share

Sort an array of classes by a variable value.

4 Replies

Your answer

Follow this Question

Related Questions