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  1. Prepare
  2. Regex
  3. Applications
  4. Detect the Domain Name
  5. Discussions

Detect the Domain Name

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168 Discussions

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  • mohamedhari317
     + 0 comments
    import re

n=int(input())
htmls="\n".join(input() for _ in range(n))

urls = re.findall(r"https?://[^\s\"'>?]+\.[a-z]{2,3}", htmls)
domains=set()
for url in urls:
    domain=re.sub(r"^https?://?","",url)
    domain=domain.split("/")[0]
    if "." in domain:
        domain=re.sub(r"^(www\d*\.)","",domain)
        domains.add(domain)
print(";".join(sorted(domains)))

  • proseo2031
     + 0 comments

    Detecting a domain name typically involves parsing the URL string to extract the domain using regex or built-in libraries in languages like Python or JavaScript. According to Wikipedia, a domain name identifies a realm of administrative autonomy within the Internet. In coding challenges, tools like urlparse or regex can simplify this process efficiently. I was practicing with real-world data like food service websites—checking out the Dairy queen menu helped simulate parsing dynamic URLs. It’s a fun way to blend real examples into coding logic while sharpening string manipulation skills.

  • fa88af
     + 0 comments
    html = sys.stdin.read()

pattern = r'https?://(?:www\.|ww2\.)?([\w-]+\.[a-zA-Z0-9.-]+)'

rs = set(re.findall(pattern,html))

print(";".join(sorted(rs)))

  • manish_swarnaka2
     + 0 comments

    import re import sys

    html= sys.stdin.read()

    pattern= r'https?://(?:www.|ww2.)?([a-zA-Z0-9-]+.?[a-zA-Z0-9-]+.[a-zA-Z].?[a-zA-Z])'

    matches=re.findall(pattern,html)

    output=sorted(set(url for url in matches))

    print(';'.join(output))

  • dineshpadhan2004
     + 0 comments
    import re
import sys

domain_pattern = re.compile(r'https?://(?:www\.|ww2\.)?([a-zA-Z0-9\-]+\.[a-zA-Z0-9.\-]+)[^a-zA-Z0-9.\-]')

input_stream = sys.stdin

unique_domains = set()

n = int(input_stream.readline().strip())

for _ in range(n):
    line = input_stream.readline().strip()
    for match in domain_pattern.findall(line):
        unique_domains.add(match)

print(';'.join(sorted(unique_domains)))