c# - 计算/排序文本文件中的字符

Question

我正在尝试编写一个程序来读取文本文件，按字符对其进行排序，并跟踪每个字符在文档中出现的次数。这是我到目前为止所拥有的。

class Program
{
    static void Main(string[] args)
    {
        CharFrequency[] Charfreq = new CharFrequency[128];

        try
        {            
        string line;
        System.IO.StreamReader file = new System.IO.StreamReader(@"C:\Users\User\Documents\Visual Studio 2013\Projects\Array_Project\wap.txt");
        while ((line = file.ReadLine()) != null)
        {
            int ch = file.Read();

            if (Charfreq.Contains(ch))
            {

            }     
        }

        file.Close();

        Console.ReadLine();
        }
        catch (Exception e)
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
    }
}

我的问题是，这里的 if 语句中应该包含什么？

我还有一个 Charfrequency 类，我将在此处包含它，以防我包含它有帮助/必要(是的，我有必要使用数组而不是列表或数组列表)。

public class CharFrequency
{
    private char m_character;
    private long m_count;

    public CharFrequency(char ch)
    {
        Character = ch;
        Count = 0;
    }

    public CharFrequency(char ch, long charCount)
    {
        Character = ch;
        Count = charCount;
    }

    public char Character
    {
        set
        {
            m_character = value;
        }

        get
        {
            return m_character;
        }
    }

    public long Count
    {
        get
        {
            return m_count;
        }
        set
        {
            if (value < 0)
                value = 0;

            m_count = value;
        }
    }

    public void Increment()
    {
        m_count++;

    }

    public override bool Equals(object obj)
    {
        bool equal = false;
        CharFrequency cf = new CharFrequency('\0', 0);

        cf = (CharFrequency)obj;

        if (this.Character == cf.Character)
            equal = true;

        return equal;
    }

    public override int GetHashCode()
    {
        return m_character.GetHashCode();
    }

    public override string ToString()
    {
        String s = String.Format("'{0}' ({1})     = {2}", m_character, (byte)m_character, m_count);

        return s;
    }

}

Answer 1

看看这篇文章。

https://codereview.stackexchange.com/questions/63872/counting-the-number-of-character-occurrences

它使用 LINQ 来实现您的目标