How Can I Split a Collection into Multiple Parts Using LINQ?

Split a collection into parts using LINQ

This article explores a common problem in data analysis and programming: splitting a set into n different subsets.

LINQ solution:

LINQ provides a simple and elegant solution for this task. The following extension method Split<T> achieves the expected result:

static class LinqExtensions
{
    public static IEnumerable<IEnumerable<T>> Split<T>(this IEnumerable<T> list, int parts)
    {
        int i = 0;
        var splits = from item in list
                     group item by i++ % parts into part
                     select part.AsEnumerable();
        return splits;
    }
}

Instructions:

The
• Split<T> method accepts two parameters: the input collection (list) and the number of parts to split it into (parts).
• It initializes the counter i to zero, which will be used as the index of the grouped element.
• This method uses the group by syntax to create groups based on the modulo of i and parts. This ensures that elements are assigned to different parts based on their position in the original collection.
• Finally, the result is projected to produce a collection of IEnumerable<T> objects, each object representing a part of the original collection.

This solution provides a convenient and readable way to split a collection into subsets using LINQ.

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