How Can LINQ Be Used to Split a List into Sublists Based on Item Index?

Divide the list using LINQ into a subjistist

There is a large number of lists, and you want to split it into smaller and easier to handle. LINQ (Language Integrated Query) is a powerful tool that can easily achieve this.

Assignment:

How do you use the

item index as a separate character and divide List into several separate SOMEOBJECT lists? For example, if there are 13 lists, you want to divide into five substatures for three items.

Solution:

The custom functions using LINQ to execute this task are shown below.

public static List<List<T>> Split<T>(IList<T> source)
{
    return source
        .Select((x, i) => new { Index = i, Value = x })
        .GroupBy(x => x.Index / 3)
        .Select(x => x.Select(v => v.Value).ToList())
        .ToList();
}

Explanation:

1. Group on items with indexes: Select method creates anonymous objects with each item value and index. Next, the Groupby method groups of these objects based on the multiplication of the index 3 (the desired sub -list size).
2. Convert to a group list: Select method in Groupby converts each group into a list.
3. conversion from to List: Finally, the Tolist method converts IENUMERABLE & LT; List & gt; to List & LT; List
& gt;.

In the provided example, [a, g, e, w, p, s, q, f, f, f, y, I, m, c, c, c, c, c, c, It is divided into g, e], [w, p, s], [q, f, x], [y, i, m], [c]].

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