如何从字符串中删除重复的子字符串？ [关闭]

Question

如何从 C# 中的字符串中删除任何重复的子字符串？例如，在这个字符串中：

This is a test test string

重复的“测试”将被删除以创建结果：

This is a test string

或者在

shift+shift+shift+shift+d

“shift+shift+shift+”将被删除，导致

shift+d

Answer 1

我希望通过你的问题本身通过改变句子重复单词被删除并且单词重复字符被删除。

using System;
using System.Collections.Generic;
using System.Linq;

namespace ConsoleApp
{
    internal class Program
    {
        private static void Main()
        {
            var input = new[] {"This is TEST TEST string", "shift+shift+shift+D"};
            foreach (string data in input)
            {
                bool contains = data.Contains((char)0x20);
                Console.WriteLine(contains ? StripFromSentence(data.TrimEnd(new[] {(char) 0x20})) : StripFromWord(data));
            }
            Console.ReadLine();
        }

        private static string StripFromWord(string word)
        {
            char[] chr = word.ToCharArray();
            var ap = new HashSet<char>();
            foreach (char s in chr)
                ap.Add(s);
            return ap.Aggregate(string.Empty, (current, c) => current + c);
        }

        private static string StripFromSentence(string sentence)
        {
            string[] strings = sentence.Split(new[] {(char) 0x20});
            var ap = new HashSet<string>();
            foreach (string s in strings)
                ap.Add(s);
            return ap.Aggregate(string.Empty, (current, word) => current + (word + (char)0x20));
        }
    }
}