04.TextProcessingLab-Text Filter

04. Text Filter
Write a program that takes a text and a string of banned words. All words included in the ban list should be replaced with
asterisks "*", equal to the word's length. The entries in the ban list will be separated by a comma and space ", ".
The ban list should be entered on the first input line and the text on the second input line.

Examples

Input                                                                 Output
Linux, Windows                                                        It is not *****, it is GNU/*****. ***** is merely the kernel,
It is not Linux, it is GNU/Linux. Linux is merely the kernel,         while GNU adds the functionality. Therefore we owe it to them
while GNU adds the functionality. Therefore we owe it to them         by calling the OS GNU/*****! Sincerely, a ******* client
by calling the OS GNU/Linux! Sincerely, a Windows client
Hints
Read the input.
Replace all ban words in the text with asterisk (*).
Use the built-in method Replace(banWord, replacement).
Use new string(char ch, int repeatCount) to create the replacement

using System;

public class Program
{
    public static void Main()
    {
        var bannedWords = Console.ReadLine().Split(", ");
        var text = Console.ReadLine();

        foreach (var item in bannedWords)
        {
            var numAsterisks = "*";
            var asterisks = "";

            for (int i = 1; i <= item.Length; i++)
            {
                asterisks += numAsterisks;
            }
            text = text.Replace(item, asterisks);
        }
        Console.WriteLine($"{text}");
    }
}