359. Logger Rate Limiter

Design a logger system that receives a stream of messages along with their timestamps. Each unique message should only be printed at most every 10 seconds (i.e. a message printed at timestamp t will prevent other identical messages from being printed until timestamp t + 10).

All messages will come in chronological order. Several messages may arrive at the same timestamp.

Implement the Logger class:

• Logger() Initializes the logger object.
• bool shouldPrintMessage(int timestamp, string message) Returns true if the message should be printed in the given timestamp, otherwise returns false.

class Logger {
    unordered_map<string, int> m;
public:
    Logger() {}

    bool shouldPrintMessage(int timestamp, string message) {
        if(m.count(message) and m[message] + 10 > timestamp) {
            return false;
        } else {
            m[message] = timestamp;
            return true;
        }
    }
};

/**
 * Your Logger object will be instantiated and called as such:
 * Logger* obj = new Logger();
 * bool param_1 = obj->shouldPrintMessage(timestamp,message);
 */