How to convert a char array to a string array?

Question

Given:

A string dayCodes (i.e. \"MWF\" or \"MRFU\") that I need to split and create a collection of strings so I

Answer 1

You can do this:

            var dayCode = "MWF";
            var daysArray = new List<string>();
            var list = new Dictionary<string, string>{
                {"M", "Monday"},
                {"T", "Tuesday"},
                {"W", "Wednesday"},
                {"R", "Thursday"},
                {"F", "Friday"},
                {"S", "Saturday"},
                {"U", "Sunday"}
            };

            for(int i = 0,max = dayCode.Length; i < max; i++)
            {
                var tmp = dayCode[i].ToString();
                if(list.ContainsKey(tmp))
                {
                    daysArray.Add(list[tmp]);
                }
            }
            Console.WriteLine(string.Join(",", daysArray));

Output:

Answer 2

Just using char.ToString() would work:

var daysArray = days.ToCharArray().Select( c => c.ToString()).ToArray();

Alternatively, and a better solution in my mind why don't you use the string directly with a dictionary for the mapping:

var daysArray = days.Select( c => dayMapping[c]).ToArray();

with dayMapping just a Dictionary<char, string> that maps to the full day name:

Dictionary<char, string> dayMapping = new Dictionary<char,string>()
{
    {  'M', "Monday" },
    {  'T', "Tuesday" }
    //and so on
}

Answer 3

To answer the question in the title for anyone finding this in a search...(not the problem as described...thats one of earlier posts.)

var t = "ABC";
var s = t.ToCharArray().Select(c => c.ToString()).ToArray();

Answer 4

char[] daysCodeArray = days.ToCharArray();
string[] daysArray = daysCodeArray.Select(el =>
{
    switch (el)
    {
        case 'M':
            return "Monday";

        case 'T':
            return "Tuesday";

        case 'W':
            return "Wednesday";

        case 'R':
            return "Thursday";

        case 'F':
            return "Friday";

        case 'S':
            return "Saturday";

        case 'U':
            return "Sunday";
     }
     throw new ArgumentException("Invalid day code");
}).ToArray();

You can change the lambda into a separate method if you want.