2982.cpp (676B)
1 class Solution { 2 public: 3 int maximumLength(const string &s) const { 4 static int count[26][3]; 5 int cnt = 0, prev = s[0]; 6 7 memset(count, 0xFF, sizeof(count)); 8 for (const char c : s) { 9 if (c == prev) 10 cnt++; 11 else { 12 prev = c; 13 cnt = 1; 14 } 15 16 const int idx = c - 'a'; 17 auto mini = min_element(count[idx], count[idx] + 3); 18 if (cnt > *mini) *mini = cnt; 19 } 20 21 int res = -1; 22 for (int i = 0; i < 26; i++) { 23 res = max(res, *min_element(count[i], count[i] + 3)); 24 } 25 26 return res; 27 } 28 };