[코딩도장] 문자열 압축 cs문제풀이

static void Main()
{
    string input = Console.ReadLine()+'\0';
    string output = null;
    char compare = input[0];
    int count = 0;

    foreach(char n in input)
    {
        if (n != compare)
        {
            output += compare + count.ToString();
            compare = n;
            count = 0;   
        }
        count++;
    }
    Console.WriteLine(output);        
}