C#: Converting List of Chars to String

Question

I'm solving a coding challenge on Coderbyte with C# using lists. I have the desired outcome but need to return it as a string.

I would like to know how to convert my list of chars into a string. Thank you in advance.

Here's my code:

string s = "I love dogs";
int i, j = 0;
List<char> array1 = new List<char>();
List<char> array2 = new List<char>();

for (i = 0; i < s.Length; i++)
{
    if (s.Length == j)
        break;

    if (Char.IsLetter(s[i]))
    {
        array1.Add(s[i]);
    }
    else
    {
        for (j = i; j < s.Length; j++)
        {
            if (Char.IsLetter(s[j]))
            {
                array2.Add(s[i]);
            }
            if (!Char.IsLetter(s[j]) || j == s.Length - 1)
            {
                if (array1.Count >= array2.Count)
                {
                    array2.Clear();
                }
                else
                {
                    array1.Clear();
                    array1.AddRange(array2);
                    array2.Clear();
                }
            }
        }
    }
} // How to convert array1 into String ?

While you *could* keep them as lists, I'd suggest using `StringBuilder` instead of `List`. As far as I can see, everything you're doing with the lists, you could do with `StringBuilder` instead. Then just call `ToString` at the end. — Jon Skeet, Oct 23 '19 at 13:43
Any reason for not changing to use it right now? It's designed for precisely this sort of task. Unless this is really throw-away code, I'd say that using StringBuilder is significantly more idiomatic. — Jon Skeet, Oct 23 '19 at 13:59

haldo · Accepted Answer · 2019-10-23T13:47:52.037

47

One option for this is to use the string constructor:

var myString = new string(array1.ToArray());

edited Oct 23 '19 at 13:47

answered Oct 23 '19 at 13:42

haldo

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2

var myString = string.Join("", array) – BigChief Nov 11 '20 at 16:29
6

`var myString = String.Concat(array1); ` is a better answer here. It is faster and allocates less memory. – Frederic Aug 21 '22 at 11:07

C#: Converting List of Chars to String

1 Answers1