Get the specific whole (0) dimension of a multidimensional array.

Question

How can I possibly count only the specific whole row i want in a multidimensional array

I do the counting of my whole row like this

 string[,] table = new string[104, 6];

 IEnumerator Win_Log(){

 GameObject p = Instantiate(prefab_gameobject) as GameObject;
 p.transform.SetParent(pos_big_road);
 p.transform.localScale = Vector3.one;
 
         img = (RawImage)p.GetComponent<RawImage>();
 //COLUMN
         for(int col = 0; col < table.GetLength(0); col++)
         {
             int sum = 0;
             //ROW
             for (int row = 0; row < table.GetLength(1); row++)
             {
                 if (table[col,row] != null)
                 {
                     sum++;
                 }
             }
             Debug.Log("table column: " + col + " has " + sum + " data");
         }
  }

The problem with this code is that it gets the whole multidimensional array . What i want is just to get the specific whole row then move to another row just like that.

Answer 1

Best Answer

Answer by Harinezumi · May 23, 2018 at 07:53 AM

You almost have it, you just need to remove iteration through all columns. Move the block in the outer for loop into a separate method, and then you can call it separately from anywhere. Like this:

 private IEnumerator YourFunction () {
     for (int col = 0; col < table.GetLength(0); ++col) {
         int sum = CountRow(table, col);
         Debug.Log("table column: " + col + " has " + sum + " data");
         yield return null;
     }
 }

 // generic function, it will work on any 2D array (mostly because I don't know the type of your table variable :D )
 public static int CountRow<T>(T[,] table, int col) {
     if (table == null || col < 0 || col >= table.GetLength(0)) {
         // handle error
         return -1;
     }

     // this is the same as the block of the outer for loop that you posted
     int sum = 0;
     for (int row = 0; row < table.GetLength(1); row++) {
         if (table[col, row] != null) { sum++; }
     }
     return sum;
 }

Btw, here is a tutorial about 2D arrays in C#: https://www.dotnetperls.com/2d

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Ginxx009 · May 23, 2018 at 08:02 AM 0

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Ginxx009 · May 23, 2018 at 08:04 AM 0

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Harinezumi Ginxx009 · May 23, 2018 at 08:14 AM 1

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Ginxx009 Harinezumi · May 23, 2018 at 08:32 AM 0

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Get the specific whole (0) dimension of a multidimensional array.

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