Regex to Valid Password

Question

The password should have at least 2 number & 2 special characters & minimum 7 characters.
My Ragex is here :
Regex ("(?=(.*\d){2,})(?=.*[a-z])(?=.*[A-Z])(?=.*[@#

Answer 1

Sharmin Rumpa sorry for my first comment. You can make 2 array one for numbers and one for special characters then check and count them from your password string

Answer 2

Anik Datta Right. But I wanna try this. This work just regular expressions is not correct. That's why some test are fail.

Answer 3

Russ Thank you. I get it now.

Answer 4

Or special characters?????

Answer 5

Assuming you're attempting the Password Validation Code Coach task, the description doesn't mention there has to be any letters (upper or lower case) in the password. I'm not saying this is the problem, but it could be that.

Also, I think you have an extra ")" at the end of your regex string.

Answer 6

Hello Sharmin Rumpa ,

Here is my try. Check and let me know if you need some changes.

https://code.sololearn.com/c4DyMG8nQvA7/?ref=app

Answer 7

Russ thank now. I change the code, now code is Regex ("(?=(.*\\d){2,})(?=.*[a-z])(?=.*[A-Z])(?=.*[@#amp;*!%]{2,}).{7,}");

It's successful but test number 13 is fail

Answer 8

$¢𝐎₹𝔭!𝐨𝓝 Thank you but I need to solve c# code

Answer 9

$¢𝐎₹𝔭!𝐨𝓝 I saw your regex, your and my regex are same. It's work but text number 13 is fail. May be I somewhere

Answer 10

Sharmin Rumpa I have solved it. You need (?=(.*\d){2,}) and (?=(.*[%*#$!@&]){2,}

Group (.*[%*#$!@&]) needs to appear twice, not [%*#$!@&] twice (consecutively) after .*

Answer 11

Copy and paste here, you have shared the link of the code coach

Answer 12

$¢𝐎₹𝔭!𝐨𝓝 I try but I don't know how to share. Ok I copy it

Answer 13

Sharmin Rumpa Your regex checks for two consecutive special characters, you need to change .*[%*#$!@&]{2,} to (.*[%*#$!@&]){2,}

Answer 14

$¢𝐎₹𝔭!𝐨𝓝 https://code.sololearn.com/cit1hOf1gAy1/?ref=app

Answer 15

Sharmin Rumpa ,
try this
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Text.RegularExpressions;

namespace SoloLearn
{
class Program
{
static void Main(string[] args)
{
string password = Console.ReadLine();
Console.WriteLine(validate(password)? "Strong" : "Weak");
}

static bool validate(string password)
{
Regex password_pattern = new Regex ("((?=(.*\\d){2,})(?=(.*[@#amp;*!%]){2,})(?=(.*[a-zA-Z]){3,}).{7,})");

Match m = password_pattern.Match(password);
return m.Success;

}

}
}

Answer 16

Here are some regex solution for same tasks.
https://www.sololearn.com/Discuss/2124383/?ref=app

Answer 17

$¢𝐎₹𝔭!𝐨𝓝 Thank you, its work. But can you please explain where my mistake?

Answer 18

Here is a example in python
import re

def password_validation(password):

numbers = re.findall(r'[0-9]', password)
specialChars = re.findall(r'\W', password)

if len(password) > 6 and len(numbers) > 1 and len(specialChars) > 1:
return 'Strong'

return 'Weak'

print(password_validation(input()))

Answer 19

Sharmin Rumpa , See regex is working fine. I have tested it. It should work with c# too.

Answer 20

$¢𝐎₹𝔭!𝐨𝓝 That doesn't explain why Sharmin Rumpa 's regex doesn't work. Would you be able to explain that?