You will be provided with a block of text, spanning not more than hundred lines. Your task is to find the unique e-mail addresses present in the text. You could use Regular Expressions to simplify your task. And remember that the "@" sign can be used for a variety of purposes!
The first line contains an integer N (N<=100), which is the number of lines present in the text fragment which follows.
From the second line, begins the text fragment (of N lines) in which you need to search for e-mail addresses.
All the unique e-mail addresses detected by you, in one line, in lexicographical order, with a semi-colon as the delimiter.
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Solution in Python
import sys, re text = sys.stdin.read() #define our email pattern regex = r"[.\w-][email protected][.\w-]+\.[\w-]+" #find all emails using regex emails = re.findall(regex, text) #remove non unique emails emails = set(emails) #convert set to list emails = list(emails) #sort in alphaetical order emails.sort() #join emails with ; print(";".join(emails))