C# - how do I use a loop to populate each array element with its index?

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Hi,

I am having trouble getting my head around arrays, collections and lists although some YouTube videos have helped me a lot. How do I use a loop to populate each array element with its index? I have tried using a foreach loop and a for loop, but neither are working. Please see what I have tried below.

Kind regards

What I have tried:

public static int[] PopulateArray(int[] array)
     {

         foreach (int something in array)
         {

             return something;
         }


     }
 }

public static int[] PopulateArray(int[] array)
      {
          for (int i = 0; ; i++)
          {

              return array;
          }
      }
  }

Posted 16-Jul-17 22:41pm

Member 13302374

Updated 16-Jul-17 22:48pm

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OriginalGriff · Accepted Answer · 2017-07-16T22:48:00

Solution 1

You can't do it with a foreach - it needs to be a for loop:

C#

public static int[] PopulateArray(int[] array)
      {
          for (int i = 0; i < array.Length; i++)
          {
              array[i] = i;
          }
      return array
      }

Posted 16-Jul-17 22:48pm

OriginalGriff

Comments

Member 13302374 17-Jul-17 4:57am

Thank you. I need to get my head around when to use a for loop, and when to use other types. I guess this'll come with experience