leetcode

0 class Solution {

1 static const int MOD = 1E9 + 7;

2

3 public:

4 int countHomogenous(const string &s) const {

5 int res = 1, count = 1;

6 for (int i = 1; i < s.size(); i++) {

7 if (s[i] != s[i - 1])

8 count = 1;

9 else

10 count++;

11 res = (res + count) % MOD;

12 }

13 return res;

14 }

15 };