Leetcode 969 Solution

This article provides solution to leetcode question 969 (number-of-recent-calls)
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https://leetcode.com/problems/number-of-recent-calls

Solution

class RecentCounter:
    def __init__(self):
        self.pings = collections.deque([])



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




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