933. Number of Recent Calls

class RecentCounter:

    def __init__(self):
        self.q = deque()

    def ping(self, t: int) -> int:
        self.q.append(t)
        while self.q[0] < t - 3000:
            self.q.popleft()
        return len(self.q)


# Your RecentCounter object will be instantiated and called as such:
# obj = RecentCounter()
# param_1 = obj.ping(t)

class RecentCounter {
    private Deque<Integer> q;

    public RecentCounter() {
        q = new LinkedList<>();
    }

    public int ping(int t) {
        q.offerLast(t);
        while (q.peekFirst() < t - 3000) {
            q.pollFirst();
        }
        return q.size();
    }
}

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

class RecentCounter {
public:
    deque<int> q;

    RecentCounter() {

    }

    int ping(int t) {
        q.push_back(t);
        while (q.front() < t - 3000) {
            q.pop_front();
        }
        return q.size();
    }
};

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

type RecentCounter struct {
	q []int
}

func Constructor() RecentCounter {
	return RecentCounter{
		q: []int{},
	}
}

func (this *RecentCounter) Ping(t int) int {
	this.q = append(this.q, t)
	for this.q[0] < t-3000 {
		this.q = this.q[1:len(this.q)]
	}
	return len(this.q)
}

/**
 * Your RecentCounter object will be instantiated and called as such:
 * obj := Constructor();
 * param_1 := obj.Ping(t);
 */

var RecentCounter = function () {
    this.q = [];
};

/**
 * @param {number} t
 * @return {number}
 */
RecentCounter.prototype.ping = function (t) {
    this.q.push(t);
    while (this.q[0] < t - 3000) {
        this.q.shift();
    }
    return this.q.length;
};

/**
 * Your RecentCounter object will be instantiated and called as such:
 * var obj = new RecentCounter()
 * var param_1 = obj.ping(t)
 */