รบกวนคุณ By : 01000010 ช่วยอธิบายโปรแกรมโค้ด อีกหน่อยได้ไหมครับ

โปรแกรม 1

        static void Main()
        {
            string[] words = new string[] { "bad", "boy", "baad", "bear", "bend" };
            foreach (string word in words)
                if (Regex.IsMatch(word, "ba+"))
                    Console.WriteLine(word);
            Console.Read();
        }
    }
}

โปรแกรม 2

        static void Main()
        {
            string[] words = new string[] { "bad", "boy", "baad", "bear", "bend" };
            foreach (string word in words)
                if (Regex.IsMatch(word, "ba{2}d"))
                    Console.WriteLine(word);
        }
    }
}

โปรแกรม 3 

static void Main()
        {
            string[] words = new string[] { "Part", "of", "this", "<b>string</b>", "is", "bold" };
            string regExp = "<.*>";
            MatchCollection aMatch;
            foreach (string word in words)
            {
                if (Regex.IsMatch(word, regExp))
                {
                    aMatch = Regex.Matches(word, regExp);
                    for (int i = 0; i < aMatch.Count; i++)
                        Console.WriteLine(aMatch[i].Value);
                }
            }
        }

โปรแกรม 4 

        static void Main() {
            string st1 = "the quick browm fox jumped over the lazy dog";
            MatchCollection matchSet;
            matchSet = Regex.Matches(st1, ".");
            foreach (Match aMatch in matchSet)
                Console.WriteLine("matches at: " + aMatch.Index);
        }
    }

โปรแกรม 5

    static void Main() {
        string st1 = "the quick brown fox jumped over the lazy dog one time";
        MatchCollection matchSet;
        matchSet = Regex.Matches(st1, "t.e");
        foreach (Match aMatch in matchSet)
            Console.WriteLine("Matches at: " + aMatch.Index);
        }
    }

โปรแกรม 6

        static void Main()
        {
            string[] words = new string[] { "Part", "of", "this", "<b>string</b>", "is", "bold" };
            string regExp = "<.*>";
            MatchCollection aMatch;
            foreach (string word in words)
            {
                if (Regex.IsMatch(word, regExp))
                {
                    aMatch = Regex.Matches(word, regExp);
                    for (int i = 0; i < aMatch.Count; i++)
                        Console.WriteLine(aMatch[i].Value);
                }
            }
        }

โปรแกรม 7

        static void Main()
        {
            string words = "08/14/57 46 02/25/59 45 06/05/85 18" +
                "03/12/88 16 09/09/90 13";
            string regExp1 = "(\\s\\d{2}\\s)";
            MatchCollection matchSet = Regex.Matches(words,regExp1);
            foreach (Match aMatch in matchSet)
                Console.WriteLine(aMatch.Groups[0].Captures[0]);
        }
    }

โปรแกรม 8

        static void Main() {
            string words = "02/14/57 46 02/25/59 45 06/05/85 18 " +
                "03/12/88 16 09/09/90 13" ;
            string regExp1 = "(?<dates>(\\d{2}/\\d{2}/\\d{2}))\\s";
            MatchCollection matchSet = Regex.Matches(words,regExp1);
            foreach (Match aMatch in matchSet)
                Console.WriteLine("Data: {0}", aMatch.Groups["dates"]);
        }
    }
}

โปรแกรม 9

       static void Main()
        {
            string dates = "08/14/57 46 02/25/59 45 06/05/85 18 " +
                "03/12/88 16 09/09/90 13";
            string regExp = "(?<dates>(\\d{2}/\\d{2}\\d{2}))\\s(?<ages>(\\d{2}))\\s";
            MatchCollection matchSet;
            matchSet = Regex.Matches(dates, regExp);
            Console.WriteLine();
            foreach (Match aMatch in matchSet)
            {
                foreach (Capture aCapture in aMatch.Groups
                    ["dates"].Captures)
                    Console.WriteLine("dates capture: " + aCapture.ToString());
                foreach (Capture aCapture in aMatch.Groups["ages"].Captures)
                    Console.WriteLine("age capture:" + aCapture.ToString());
            }
        }
    }