C#计算字符串中单词的出现次数

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1970-01-01

using System;class Program {static void Main() {string str = Hello World! Hello!;Console.WriteLine(Occurrence:+Check.CheckOccurrences(str, Hello));

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using System;

class Program {
   static voID Main() {
      string str = "Hello World! Hello!";
      Console.Writeline("Occurrence:"+Check.CheckOccurrences(str, "Hello"));
   }
}

public static class Check {
   public static int CheckOccurrences(string str1, string pattern) {
      int count = 0;
      int a = 0;

      while ((a = str1.IndexOf(pattern, a)) != -1) {
         a += pattern.Length;
         count++;
      }
      return count;
   }
}

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本文标题为：C#计算字符串中单词的出现次数