Get an acronym from a string in C# using LINQ?

Question

Here is how I would write a function to make an acronym in Java style:

    string makeAcronym(string str)
    {
        string result = \"\";
        for (in         


        

Answer 1

Here are a couple of options

A .NET 4 only option using string.Join:

 string acronym = string.Join(string.Empty,
      input.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries).Select(s => s[0])
      );

In .NET 3.5 (or 4.0), you can do:

 string acronym = new string(input.Split(new[] {' '}, 
      stringSplitOptions.RemoveEmptyEntries).Select(s => s[0]).ToArray());

Another option (my personal choice), based on your original logic:

 string acronym = new string(
      input.Where( (c,i) => c != ' ' && (i == 0 || input[i-1] == ' ') )
      .ToArray()
    );