[leetcode] 933. Number of Recent Calls : https://leetcode.com/problems/number-of-recent-calls

Number of Recent Calls.cc

class RecentCounter {
public:

    queue<int> q = queue<int>();
    
    RecentCounter() {
        q = queue<int>();
    }
    
    int ping(int t) {
        q.push(t);
        while(!q.empty() && q.front() < t-3000) q.pop();
        return q.size();
    }
};

/**
 * Your RecentCounter object will be instantiated and called as such:
 * RecentCounter* obj = new RecentCounter();
 * int param_1 = obj->ping(t);
 */