public class Solution {

    public string OriginalDigits(string s) {

        int[] count = new int[];

            for (int i = ; i < s.Length; i++)

            {

                char c = s[i];

                if (c == 'z') count[]++;

                if (c == 'w') count[]++;

                if (c == 'x') count[]++;

                if (c == 's') count[]++; //7-6

                if (c == 'g') count[]++;

                if (c == 'u') count[]++;

                if (c == 'f') count[]++; //5-4

                if (c == 'h') count[]++; //3-8

                if (c == 'i') count[]++; //9-8-5-6

                if (c == 'o') count[]++; //1-0-2-4

            }

            count[] -= count[];

            count[] -= count[];

            count[] -= count[];

            count[] = count[] - count[] - count[] - count[];

            count[] = count[] - count[] - count[] - count[];

            StringBuilder sb = new StringBuilder();

            for (int i = ; i <= ; i++)

            {

                for (int j = ; j < count[i]; j++)

                {

                    sb.Append(i);

                }

            }

            return sb.ToString();

    }

}