c# accepted solution - beats 100% c#
\npublic int NumUniqueEmails(string[] emails)\n{\n\tHashSet<string> uEmails = new HashSet<string>();\n\tforeach (var email in emails)\n\t{\n\t\tvar emailArr  = 
```\npublic int NumUniqueEmails(string[] emails)\n{\n\tHashSet<string> uEmails = new HashSet<string>();\n\tforeach (var email in emails)\n\t{\n\t\tvar emailArr  = email.Split(\'@\');\n\t\tstring emailId = emailArr[0];\n\t\tif(emailId.IndexOf(\'+\')!=-1)\n\t\t{\n\t\t\temailId = emailId.Substring(0, emailId.IndexOf(\'+\'));\n\t\t}\n\t\tuEmails.Add($"{emailId.Replace(".", "")}@{emailArr[1]}");\n\t}\n\treturn uEmails.Count();\n}\n```
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