CountLettersInString

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

namespace CountLettersInString
{
    class CountLettersInString
    {
        static void Main(string[] args)
        {
            string word = Console.ReadLine().ToLower();
            int[] count = new int[word.Max()+2];
            foreach(char letter in word)
            {
                 count[letter]++;
            }
            for (int i = 0; i < count.Length; i++)
            {
                if(count[i] > 0)
                {
                    char letter = (char)i;
                    int occurrencies = count[i];
                    Console.WriteLine("{0} ->{1} times",letter,occurrencies);
                }
            }
        }
    }
}