using System;
using System.Text.RegularExpressions;
// b[aeou]y: This pattern looks for strings that match the following:
// b: The letter "b".
// [aeou]: Any single character that is either "a", "e", "o", or "u".
// y: The letter "y".
class Program
{
static bool CheckPattern(string pattern, string text) {
Regex re = new Regex(pattern, RegexOptions.IgnoreCase);
return re.IsMatch(text);
}
static void Main()
{
string pattern = "b[aeou]y";
Console.WriteLine(CheckPattern(pattern, "A smart boy")); // b o y
Console.WriteLine(CheckPattern(pattern, "I want to buy this laptop")); // b u y
Console.WriteLine(CheckPattern(pattern, "baay"));
Console.WriteLine(CheckPattern(pattern, "baeouy"));
Console.WriteLine(CheckPattern(pattern, "baey"));
Console.WriteLine(CheckPattern(pattern, "This is beauty"));
Console.WriteLine(CheckPattern(pattern, "A programming book"));
}
}
/*
run:
True
True
False
False
False
False
False
*/
