Create Unique-Email-Addresses.py

Author: AG-Systems

Leetcode/Unique-Email-Addresses.py

@@ -0,0 +1,15 @@
+class Solution:
+    def numUniqueEmails(self, emails: List[str]) -> int:
+        if len(emails) == 0:
+            return 0
+
+        from collections import defaultdict
+        email_table = defaultdict(int)
+
+        for email in emails:
+            parts = email.split("@")
+            parts[0] = parts[0].replace(".", '')
+            if "+" in parts[0]:
+                parts[0] = parts[0][0:parts[0].find("+")]
+            email_table[tuple(parts)] += 1
+        return len(email_table.keys())