Get the first and last item of an array of strings

Question

If I have the following array of strings:

string[] stringArray = {\"one\", \"two\", \"three\", \"four\"};

Is there a way to get the first and l

Answer 1

There are stringArray.First() and stringArray.Last() as extension methods in the System.Linq namespace.

Answer 2

First

    Console.WriteLine(stringArray.First());
    Console.WriteLine(stringArray.ElementAt(0));
    Console.WriteLine(stringArray[0]);
    var stringEnum = stringArray.GetEnumerator();
    if (stringEnum.MoveNext())
        Console.WriteLine(stringEnum.Current);

Last

    Console.WriteLine(stringArray.Last());
    if (stringArray.Any())
        Console.WriteLine(stringArray.ElementAt(stringArray.Count()-1));
    Console.WriteLine(stringArray[stringArray.Length -1]);
    var stringEnum = stringArray.GetEnumerator();
    string lastValue = null;
    while (stringEnum.MoveNext())
        lastValue = (string)stringEnum.Current;
    Console.WriteLine(lastValue);

Answer 3

string[] stringArray = { "one", "two", "three", "four" };
var last=stringArray.Last();
var first=stringArray.First();

Answer 4

You can use stringArray.GetUpperBound(0) to get the index of the last item.

Answer 5

Use LINQ First() and Last() methods.

Moreover, both methods have useful overload which allows specifying boolean condition for elements to be considered as first or last.