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

namespace?ConsoleApp1
{
????class?Program
????{
????????static?void?Main（）
????????{
????????????string[]?arr?=?new?string[]?{?“a“?“b“?“c“?“d“?“e“?};
????????????List?list?=?new?List（）;
????????????foreach?（string?s?in?arr）
????????????{
????????????????List?lst?=?list.GetRange（0?list.Count）;
????????????????string[]?nArr?=?{?s?};
????????????????list.Add（nArr）;
????????????????foreach?（string[]?ss?in?lst）
????????????????{
????????????????????list.Add（ss.Concat（nArr）.ToArray（））;
????????????????}
????????????}
????????????List?outList?=?list.OrderByDescending（p?=>?p.Length）.ToList（）;
????????????outList.ForEach（p?=>?Console.WriteLine（string.Join（““?p）））

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-12-02?00:34??ConsoleApp1\
?????文件?????????178??2018-12-02?00:31??ConsoleApp1\ConsoleApp1.csproj
?????文件????????1716??2018-12-02?00:34??ConsoleApp1\Program.cs
?????目錄???????????0??2018-12-02?00:31??ConsoleApp1\bin\
?????目錄???????????0??2018-12-02?00:31??ConsoleApp1\bin\Debug\
?????目錄???????????0??2018-12-02?00:32??ConsoleApp1\bin\Debug\netcoreapp2.1\
?????文件?????????465??2018-12-02?00:31??ConsoleApp1\bin\Debug\netcoreapp2.1\ConsoleApp1.deps.json
?????文件????????5632??2018-12-02?00:32??ConsoleApp1\bin\Debug\netcoreapp2.1\ConsoleApp1.dll
?????文件?????????876??2018-12-02?00:32??ConsoleApp1\bin\Debug\netcoreapp2.1\ConsoleApp1.pdb
?????文件?????????252??2018-12-02?00:32??ConsoleApp1\bin\Debug\netcoreapp2.1\ConsoleApp1.runtimeconfig.dev.json
?????文件?????????154??2018-12-02?00:32??ConsoleApp1\bin\Debug\netcoreapp2.1\ConsoleApp1.runtimeconfig.json
?????目錄???????????0??2018-12-02?00:31??ConsoleApp1\obj\
?????文件?????????149??2018-12-02?00:31??ConsoleApp1\obj\ConsoleApp1.csproj.nuget.cache
?????文件????????1587??2018-12-02?00:31??ConsoleApp1\obj\ConsoleApp1.csproj.nuget.g.props
?????文件?????????981??2018-12-02?00:31??ConsoleApp1\obj\ConsoleApp1.csproj.nuget.g.targets
?????目錄???????????0??2018-12-02?00:31??ConsoleApp1\obj\Debug\
?????目錄???????????0??2018-12-02?00:32??ConsoleApp1\obj\Debug\netcoreapp2.1\
?????文件????????1016??2018-12-02?00:31??ConsoleApp1\obj\Debug\netcoreapp2.1\ConsoleApp1.AssemblyInfo.cs
?????文件??????????42??2018-12-02?00:31??ConsoleApp1\obj\Debug\netcoreapp2.1\ConsoleApp1.AssemblyInfoInputs.cache
?????文件???????20697??2018-12-02?00:31??ConsoleApp1\obj\Debug\netcoreapp2.1\ConsoleApp1.assets.cache
?????文件??????????42??2018-12-02?00:31??ConsoleApp1\obj\Debug\netcoreapp2.1\ConsoleApp1.csproj.CoreCompileInputs.cache
?????文件?????????980??2018-12-02?00:32??ConsoleApp1\obj\Debug\netcoreapp2.1\ConsoleApp1.csproj.FileListAbsolute.txt
?????文件????????5632??2018-12-02?00:32??ConsoleApp1\obj\Debug\netcoreapp2.1\ConsoleApp1.dll
?????文件?????????876??2018-12-02?00:32??ConsoleApp1\obj\Debug\netcoreapp2.1\ConsoleApp1.pdb
?????文件???????????0??2018-12-02?00:31??ConsoleApp1\obj\Debug\netcoreapp2.1\TemporaryGeneratedFile_036C0B5B-1481-4323-8D20-8F5ADCB23D92.cs
?????文件???????????0??2018-12-02?00:31??ConsoleApp1\obj\Debug\netcoreapp2.1\TemporaryGeneratedFile_5937a670-0e60-4077-877b-f7221da3dda1.cs
?????文件???????????0??2018-12-02?00:31??ConsoleApp1\obj\Debug\netcoreapp2.1\TemporaryGeneratedFile_E7A71F73-0F8D-4B9B-B56E-8E70B10BC5D3.cs
?????文件???????39513??2018-12-02?00:31??ConsoleApp1\obj\project.assets.json
?????文件????????1132??2018-12-02?00:31??ConsoleApp1.sln