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c#arrayslinq
Varun Sharma
Varun Sharma

Reputation: 2758

C# code for equivalent LINQ query

I have got the following LINQ query and would like to know equivalent normal C# code for it.

int[] arrayMain = new int[6];

return (from i in Enumerable.Range(0, arrayMain.Length / 2)
       from c in ReturnArrayOfLengthTwo()
       select c).ToArray();

The output of this query is coming as an array of length 6. But I would like to know about ordering because ReturnArrayOfLengthTwo just selects two random locations from arrayMain and then creates and returns an array of length 2.

Thanks

Upvotes: 2

Views: 142

Answers (2)

Inisheer
Inisheer

Reputation: 20794

In very basic C# (no LINQ, generics, extension methods, etc.), it would look something like:

int[] arrayMain = new int[6];

// Filling the arrayMain with two elements, so increment i by 2
// arrayMain[0], arrayMain[1] (first loop)
// arrayMain[2], arrayMain[3] (second loop)
// arrayMain[4], arrayMain[5] (third loop)
for (int i = 0; i < arrayMain.Length - 1; i += 2)
{
    // Returns two elements to insert into the arrayMain array.
    int[] returnedArray = ReturnArrayOfLengthTwo();

    arrayMain[i] = returnedArray[0];
    arrayMain[i + 1] = returnedArray[1];
}

Simply put, the ReturnArrayOfLengthTwo obviously returns two elements to put into the array. Therefore, you only need to iterate over the loop 3 times instead of 6 in order to put all the required values into arrayMain.

Upvotes: 1

Dimitar Dimitrov
Dimitar Dimitrov

Reputation: 15138

Well it would be something like:

var list = new List<int>();

for (int i = 0; i <= arrayMain.Length / 2; i++)
    foreach (int j in ReturnArrayOfLengthTwo())
        list.Add(j);

return list.ToArray();

I hope I understood you correct.

Upvotes: 1

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