如何解析大写单词的字符串

Question

我有这个字符串: " Mimi loves Toto and Tata hate Mimi so Toto killed Tata"

我想编写一个代码,只打印以大写字母开头的单词,避免重复

输出应该是

Mimi
Toto
Tata

我试图这样做,但即使没有出现任何错误,我也确定错了.

我写的代码:

static void Main(string[] args)
        {
            string s = "Memi ate Toto and she killed Tata Memi also hate Biso";
            Console.WriteLine((spliter(s)));
        }



        public static string spliter(string s)
        {

            string x = s;
            Regex exp = new Regex(@"[A-Z]");
            MatchCollection M = exp.Matches(s);

            foreach (Match t in M)
            {

                while (x != null)
                {
                    x = t.Value;  
                }

            }
            return x;
        }


    }
}

理念:

如果我将字符串拆分成数组,然后应用正则表达式逐字检查它然后打印结果怎么办？我不知道 - 任何人都可以帮我制作这段代码吗？

Answer 1

我根本不知道C#/ .net正则表达式lib,但这个正则表达式模式将会这样做:

\b[A-Z][a-z]+

\ b表示匹配只能从单词的开头开始.如果你想允许单字大写,请将+更改为*.

编辑:你想匹配"麦当劳"？

\b[A-Z][A-Za-z']+

如果您不想匹配'如果它只出现在字符串的末尾,那么只需执行以下操作:

\b[A-Z][A-Za-z']+(?<!')

Answer 2

我不知道为什么我要张贴这个......

   string[] foo = "Mimi loves Toto and Tata hate Mimi so Toto killed Tata".Split(' ');
            HashSet<string> words = new HashSet<string>();
            foreach (string word in foo)
            {
                if (char.IsUpper(word[0]))
                {
                    words.Add(word);
                }
            }

            foreach (string word in words)
            {
                Console.WriteLine(word);
            }

Answer 3

C#3

        string z = "Mimi loves Toto and Tata hate Mimi so Toto killed Tata";
        var wordsWithCapital = z.Split(' ').Where(word => char.IsUpper(word[0])).Distinct();
        MessageBox.Show( string.Join(", ", wordsWithCapital.ToArray()) );

C#2

        Dictionary<string,int> distinctWords = new Dictionary<string,int>();
        string[] wordsWithInitCaps = z.Split(' ');
        foreach (string wordX in wordsWithInitCaps)
            if (char.IsUpper(wordX[0]))
                if (!distinctWords.ContainsKey(wordX))
                    distinctWords[wordX] = 1;
                else
                    ++distinctWords[wordX];                       


        foreach(string k in distinctWords.Keys)
            MessageBox.Show(k + ": " + distinctWords[k].ToString());