Fill an array with arrays in different sizes

Question

I am looking for an efficient and nice way to fill an array with arrays in different sizes. I am thinking of a solution like:

private bool arrayMaking(int[] array1, int[] array2, int value, out int[] arrays)
{
    arrays = {array1, array2, value};
    return true;
}

Is there a possible solution or do I need to loop?

What is the expected result? A input / output example would help — fubo, Jun 27 '16 at 09:30
oh sorry, my original method is much more complex and I tried to break it down to the essential part. The return `bool` is not relevant for the array filling process, the method can be void, too. In my Method I check, if the values in `array1` and `array2` are okay. If yes, I return the solution shown, if not, I try to change the values of array2 and after the adaption I fill the `arrays` with `{array1, array2, value}`. If the adaption is not possible, I return false. The code posted throws an error in Visual Studio, saying "Invalid Expression "{"" — shup, Jun 27 '16 at 09:33
Possible duplicate of [Array of arrays, with different sizes](http://stackoverflow.com/questions/22745750/array-of-arrays-with-different-sizes) — Abdul, Jun 27 '16 at 09:36

score 1 · Answer 1 · answered Jun 27 '16 at 09:35

If you want to initialize the array from the two other arrays and the int, you could use:

private bool ArrayMaking(int[] array1, int[] array2, int value, out int[] arrays)
{
    int size = array1.Length + array2.Length + 1;
    arrays = new int[size];
    for (int i = 0; i < array1.Length; i++)
        arrays[i] = array1[i];
    for (int i = 0; i < array2.Length; i++)
        arrays[i + array1.Length] = array2[i];
    arrays[arrays.Length - 1] = value;
    return true;
}

less efficient but more readable using LINQ:

private bool ArrayMaking(int[] array1, int[] array2, int value, out int[] arrays)
{
    arrays = array1.Concat(array2).Concat(new[] {value}).ToArray();
    return true;
}

score 0 · Answer 2 · edited May 23 '17 at 12:32

0

Are you looking for Jagged Array ?

You can also create an Array of Arrays

edited May 23 '17 at 12:32

Community

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1

answered Jun 27 '16 at 09:33

Abdul

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score 0 · Accepted Answer · answered Jun 27 '16 at 09:33

0

It sounds to me that you want to merge one or more arrays into single Array. You could do this using Concat (or Union to eliminate duplicates).

private bool arrayMaking(int[] array1, int[] array2, int value, out int[] arrays)
{
    arrays = array1.Concat(array2).Concat( new int[] {value}).ToArray();
    return true;
}

answered Jun 27 '16 at 09:33

Hari Prasad

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Thanks, that was exactly what I was searching for! Works great. – shup Jun 27 '16 at 09:47

score 0 · Answer 4 · answered Jun 27 '16 at 09:38

You could use LINQ to solve your problem:

// Make sure to add these first:
using System.Linq;
using System.Collections.Generic;

private bool arrayMaking(int[] array1, int[] array2, int value, out int[] arrays)
{
    List<int> array = new List<int>();
    array.AddRange(array1);
    array.AddRange(array2);
    array.Add(value);
    arrays = array.ToArray();
    return true;
}

Fill an array with arrays in different sizes

4 Answers4