This is a c# program i can do it with letters but not numbers

Write pseudocode for an algorithm that will get a string of digits as input, and then output a new string which "describes" the previous one using only digits.

Ex. - if the initial string is "22111344", the descriptive string result would be "22311324". This is shorthand for "two 2s, three 1s, one 3, and two 4s".

i can do it with letters this is the code i worte

static void Main(string[] args)

{ String str; int i, cnt;

Console.WriteLine("Enter any Number"); str = Console.ReadLine(); char ch;

for (ch = (char)65; ch <= 90; ch++) { cnt = 0;

for (i = 0; i < str.Length; i++) { if (ch == str[i] || (ch + 32) == str[i]) { cnt++; } }

if (cnt > 0) { Console.WriteLine(ch + "=" + cnt); } } Console.ReadLine();

}