(SPOILER)The Spy Life Challenge. Is there a better/cleaner way to do this?

Question

https://code.sololearn.com/cMzGVrxPIfs6/?ref=app

Answer 1

https://www.sololearn.com/learn/9704/?ref=app

Answer 2

Hi! I share my code with you. I think it's a bit cleaner ;).

https://code.sololearn.com/c9stgqi9Jeme

static void Main(string[] args)
{
string str = Console.ReadLine();
List<char> li = new List<char>();

foreach(char c in str)
{
if(Char.IsLetter(c) || c == ' ')
li.Add(c);
}
li.Reverse();
string myString = new string(li.ToArray());
Console.WriteLine(myString);
}

Answer 3

Use Regex to remove other characters than letter

Answer 4

I understand what you mean, but i dont know how to write and what does that regex include.

Answer 5

Regex?

"Represents an immutable regular expression."

How to use a Regex?

Answer 6

s = Regex.Replace(s,@"[^A-Z a-z]","");
Also add namespace
Using System.Text.RegularExpressions;

Answer 7

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
string s = Console.ReadLine();
s = Regex.Replace(s,@"[^A-Z a-z]","");
Console.Write(Reverse(s));
}
public static string Reverse(string s) {
char[] charArray = s.ToCharArray();
Array.Reverse(charArray);
return new string(charArray);
}
}
}

Answer 8

The best way is to create your own Reverse Functions and use RegExp