public class Solution {    public bool RepeatedSubstringPattern(string s) {        var len = s.Length;            if (len < 2)            {                return false;            }            else if (len == 2)            {                if (s[0] == s[1])                {                    return true;                }                else                {                    return false;                }            }            else            {                var bound = Convert.ToInt32(Math.Ceiling(Convert.ToDouble(len) / 2));                for (int i = 1; i <= bound; i++)                {                    if (len % i == 0)                    {                        var teams = len / i;//共teams组,每组i个字符                        var orginal = s.Substring(0, i);//第一组的串                        var count = 0;                        for (int t = 1; t < teams; t++)                        {                            var copy = s.Substring(t * i, i);                            if (orginal == copy)                            {                                count++;                            }                            else                            {                                break;                            }                        }                        if (count == teams - 1)                        {                            return true;                        }                    }                }                return false;            }    }}