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UniqueEmailAddresses.py
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UniqueEmailAddresses.py
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from typing import List
import re
# Regex
class Solution1:
def numUniqueEmails(self, emails: List[str]) -> int:
uniqueEmails = set()
for email in emails:
if email.count('+'):
localName = re.search("[^\+]+", email).group(0)
else:
localName = re.search("[^@]+", email).group(0)
localName = localName.replace('.', '')
domainName = re.search("@(.+)", email).group(1)
uniqueEmails.add(localName+'@'+domainName)
return len(uniqueEmails)
# String manipulation
class Solution2:
def numUniqueEmails(self, emails: List[str]) -> int:
uniqueEmails = set()
for email in emails:
local, domain = email.split('@')
if '+' in local:
local = local[:local.index('+')]
local = local.replace('.', '')
uniqueEmails.add(local+'@'+domain)
return len(uniqueEmails)
print(Solution1().numUniqueEmails([
"ted.st.a2+2@tde.st.com",
"ted.st.a2+2@tdest.com",
"ted.st.a2+2@tde.st.com"
]))
# expected: 2