Reverse Coding Challenge 1
public class Program
{ //"A4B5C2" ➞ "AAAABBBBBCC"
public static string MysteryFunc(string s)
{ string s2 = "";
for (int i = 0; i < s.Length; i+=2)
s2 += new string(s[i], int.Parse((s[i+1]).ToString()));
return s2;
}
}