solves #359: Logger rate limiter in java

Author: anishLearnsToCode

README.md

@@ -301,7 +301,7 @@
 | 351  | 🔒 [Android Unlock Patterns](https://leetcode.com/problems/android-unlock-patterns)                                                                                    |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 355  | [Design Twitter](https://leetcode.com/problems/design-twitter)                                                                                                         |                                                                                                                                                                                                                                  |                                                                                                                                   |
 | 357  | [Count Numbers with Unique Digits](https://leetcode.com/problems/count-numbers-with-unique-digits)                                                                     |                                                                                                                                                                                                                                  |                                                                                                                                   |
-| 359  | 🔒 [Logger Rate Limiter](https://leetcode.com/problems/logger-rate-limiter)                                                                                            |                                                                                                                                                                                                                                  |                                                                                                                                   |
+| 359  | 🔒 [Logger Rate Limiter](https://leetcode.com/problems/logger-rate-limiter)                                                                                            |                                                                                      [![Java](assets/java.png)](src/LoggerRateLimiter.java)                                                                                      |                                                                                                                                   |
 | 367  | [Valid Perfect Square](https://leetcode.com/problems/valid-perfect-square)                                                                                             |                                                      [![Java](assets/java.png)](src/ValidPerfectSquare.java) [![Python](assets/python.png)](python/valid_perfect_square.py)                                                      |                                                                                                                                   |
 | 374  | [Guess Number Higher or Lower](https://leetcode.com/problems/guess-number-higher-or-lower)                                                                             |                                               [![Java](assets/java.png)](src/GuessNumberHigherOrLower.java) [![Python](assets/python.png)](python/guess_number_higher_or_lower.py)                                               |                                                                                                                                   |
 | 380  | [Insert Delete GetRandom O(1)](https://leetcode.com/problems/insert-delete-getrandom-o1)                                                                               |                                                                                   [![Java](assets/java.png)](src/InsertDeleteGetRandomO1.java)                                                                                   |                                                                                                                                   |

src/LoggerRateLimiter.java

@@ -0,0 +1,28 @@
+// https://leetcode.com/problems/logger-rate-limiter
+// N: number of requests made to shouldPrint(), M: total number of different messages
+// T: O(N)
+// S: O(M)
+
+import java.util.HashMap;
+import java.util.Map;
+
+public class LoggerRateLimiter {
+}
+
+class Logger {
+    final Map<String, Integer> messageTimestamps = new HashMap<>();
+
+    public boolean shouldPrintMessage(int timestamp, String message) {
+        if (!messageTimestamps.containsKey(message)) {
+            messageTimestamps.put(message, timestamp);
+            return true;
+        }
+
+        if (messageTimestamps.get(message) + 10 > timestamp) {
+            return false;
+        }
+
+        messageTimestamps.put(message, timestamp);
+        return true;
+    }
+}