leetcode

Solution to some Leetcode problems written in C++
git clone git://git.dimitrijedobrota.com/leetcode.git
Log | Files | Refs | README | LICENSE

1209.cpp (521B)


0 class Solution {
1 public:
2 string removeDuplicates(string s, int k) {
3 stack<pair<char, int>> st;
4 for (char c : s)
5 if (!st.empty() && st.top().first == c) {
6 if (++st.top().second == k) st.pop();
7 } else
8 st.push(make_pair(c, 1));
10 string res = "";
11 while (!st.empty()) {
12 res += string(st.top().second, st.top().first);
13 st.pop();
14 }
15 reverse(res.begin(), res.end());
16 return res;
17 }
18 };