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  1. Prepare
  2. Tutorials
  3. 30 Days of Code
  4. Day 28: RegEx, Patterns, and Intro to Databases
  5. Discussions

Day 28: RegEx, Patterns, and Intro to Databases

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649 Discussions

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  • jacobjosephgrah1
     + 0 comments
    import re
if __name__ == '__main__':
    N = int(input().strip())

    names = []
    for N_itr in range(N):
        first_multiple_input = input().rstrip().split()

        firstName = first_multiple_input[0]

        emailID = first_multiple_input[1]
        
        if re.search('@gmail.com$', emailID):
            names.append(firstName)
    for name in sorted(names):
        print(name)

  • puppy567567
     + 1 comment

    import java.io.; import java.util.; import java.util.regex.Pattern;

    public class Solution {

    public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    int i = scan.nextInt();
    List<String> userlist = new ArrayList<String>();

    while( i-- >0 ){
        String name = scan.next();
        String email = scan.next();

        boolean isnamelength = Pattern.matches("\\w{1,20}", name);
        boolean isname = Pattern.matches("^[a-z]*$", name);            

        boolean ismaillength = Pattern.matches("\\D{1,50}", email);
        boolean isgmail = email.endsWith("@gmail.com");

        if(isnamelength && isname && ismaillength && isgmail){
            userlist.add(name);
        }
    }

    String[] arr = userlist.toArray(new String[userlist.size()]);
    Arrays.sort(arr);
    for(int j = 0 ; j<userlist.size(); j++){
        System.out.println(arr[j]);
    }
}

    }

  • p_todorov1015
     + 0 comments

    fast python solution

    import re

n = int(input().strip())

data = []
for _ in range(n):
    first_multiple_input = input().rstrip().split()

    first_name = first_multiple_input[0]

    email_id = first_multiple_input[1]

    data.append(first_name) if re.findall("\w[a-zA-Z]*@gmail.com", email_id) else None

[print(x) for x in sorted(data)]

  • sivaram_movva1
     + 0 comments

    c#

    class Solution { public static void Main(string[] args) { int N = Convert.ToInt32(Console.ReadLine().Trim());

        List<string> l= new();

    for (int NItr = 0; NItr < N; NItr++)
    {
        string[] firstMultipleInput = Console.ReadLine().TrimEnd().Split(' ');

        string firstName = firstMultipleInput[0];

        string emailID = firstMultipleInput[1];

        if(!l.Any(i=>i==emailID) && Regex.Match(emailID, "@gmail.com").Success)
        {
            l.Add(firstName);
        }
    }

    foreach(var e in l.Order())
    {
        Console.WriteLine(e);
    }
}

    }

  • alexgulyaev_work
     + 0 comments

    C#

    using System.Text.RegularExpressions;

    int N = int.Parse(Console.ReadLine()); List names = new List();

    Regex gmailPattern = new Regex(@"@gmail.com$");

    for (int i = 0; i < N; i++) { var parts = Console.ReadLine().Split(' '); string firstName = parts[0]; string emailID = parts[1];

    if (gmailPattern.IsMatch(emailID))
    names.Add(firstName);

    }

    foreach (var name in names.OrderBy(n => n)) Console.WriteLine(name);