Flatten Array

Challenge Overview

Take a nested list and return a single list with all values except nil/null.

Visit the flatten-array exercise on Exercism to read the full instructions and download the exercise files.

Community Solutions

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The following are the top 3 community solutions by stars:

Solution 1 by @ErikSchierboom (⭐ 1) — View on Exercism
Solution 2 by @tomfaber (⭐ 3) — View on Exercism
Solution 3 by @nikit9999 (⭐ 0) — View on Exercism

Source: Exercism csharp/flatten-array

💡 View Solution

using System.Collections;

public static class FlattenArray
{
    public static IEnumerable Flatten(IEnumerable input)
    {
        foreach (var element in input)
        {
            if (element is IEnumerable enumerable)
            {