Question

我正在寻找帮助策略性地重命名列表中的字母数字字符串，同时保留其索引。

我为下面的代码中提到的missionList维护了几个并行列表，因此索引很重要。当用户删除列表中的一个条目时会出现问题，这些条目将在同名的任务类型之间留下间隙。

从{Mapping1，Mapping2，Mapping3}中删除Mapping2 离开{Mapping1，Mapping3}，但我希望它是{Mapping1， Mapping2}。

在添加其他任务类型（如侵蚀和犯罪）之前，这并不困难。有一个未确定数量的任务类型，因此代码需要为此做好准备。

应该导致{Mapping1，Mapping3，Erosion2}的重命名操作在{Mapping1，Mapping2，Erosion1}中。

我已在下方添加了为此设置的代码。

static void Main(string[] args)
    {
        List<string> missionList = new List<string> { "Mapping1", "Mapping3", "Erosion2",
            "Mapping4", "Erosion3", "Crime1", "Mapping6", "Mapping8", "Erosion1" };

        for (int i = 0; i < missionList.Count; i++)
        {
            // Get the mission number
            int firstNumber = missionList[i].IndexOfAny("0123456789".ToCharArray());
            int number = Convert.ToInt32(missionList[i].Substring(firstNumber));

            // Get the mission name
            string name = missionList[i].Substring(0, firstNumber);

            //TODO: Rename missionList strings
            //      - Index of each string remains the same
            //      - Each "name" portion of the string stays the same
            //      - The "number" portion of the string is changed to reflect its position 
            //          in relation to items with the same "name"
            //          ex. { "Mapping4", "Mapping3" } becomes { "Mapping1", "Mapping2" }
        }

        /*  After remaming, missionList should be:
            { "Mapping1", "Mapping2", "Erosion1", "Mapping3", "Erosion2", "Crime1", 
                "Mapping4", "Mapping5", "Erosion3" }   */
    }

Answer 1

这样的事情可以起作用

using System.Collections.Generic;
using System.Text.RegularExpressions;
using System.Linq;

    private static void DoIt()
    {
        Regex regex = new Regex("\\d*", RegexOptions.None);//we'll use this ro remove the existing numbers
        List<string> thelista = new List<string>() { "aa11", "ab2", "aa4", "df4" };//lets fake a list
        List<string> thelist = new List<string>() { "Mapping1", "Mapping3", "Erosion2", "Mapping4", "Erosion3", "Crime1", "Mapping6", "Mapping8", "Erosion1"};//Lets fake your list

        List<string> templist = new List<string>();//our temp storage
        Dictionary<string, int> counter = new Dictionary<string, int>();//our counting mechanism


        for (int i = 0; i < thelist.Count; i++)//loop through the original list of string
        {
            templist.Add(regex.Replace(thelist[i], ""));//strip the number and add it to the temp list

            if (!counter.ContainsKey(templist.Last()))
            {
                counter.Add(templist.Last(), 0);//add the type to the counter dictionnary and set the "counter" to 0
            }

        }

        for (int i = 0; i < templist.Count; i++)//loop through the temp list
        {
            counter[templist[i]]++;//increment the counter of the proper type
            templist[i] = templist[i] + counter[templist[i]];//add the counter value to the string in the list
        }

        thelist = templist;//tadam

    }

输入

Mapping1
Mapping3
Erosion2
Mapping4
Erosion3
Crime1
Mapping6
Mapping8
Erosion1

输出

Mapping1
Mapping2
Erosion1
Mapping3
Erosion2
Crime1
Mapping4
Mapping5
Erosion3

在保持索引的同时重命名列表中的一些字符串

1 个答案: