C#统计词频出现的次数并排序

[{"title":"（12个子文件21KB）C#统计词频出现的次数并排序","children":[{"title":"ConsoleApplication1","children":[{"title":"ConsoleApplication1","children":[{"title":"bin","children":[{"title":"Debug","children":[{"title":"ConsoleApplication1.exe <span style='color:#111;'>20.00KB</span>","children":null,"spread":false},{"title":"ConsoleApplication1.pdb <span style='color:#111;'>17.50KB</span>","children":null,"spread":false},{"title":"ConsoleApplication1.vshost.exe <span style='color:#111;'>5.50KB</span>","children":null,"spread":false},{"title":"a <span style='color:#111;'>34B</span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"Program.cs <span style='color:#111;'>4.60KB</span>","children":null,"spread":false},{"title":"obj","children":[{"title":"ConsoleApplication1.csproj.FileList.txt <span style='color:#111;'>182B</span>","children":null,"spread":false},{"title":"Debug","children":[{"title":"ConsoleApplication1.exe <span style='color:#111;'>20.00KB</span>","children":null,"spread":false},{"title":"ConsoleApplication1.pdb <span style='color:#111;'>17.50KB</span>","children":null,"spread":false},{"title":"TempPE","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"ConsoleApplication1.csproj <span style='color:#111;'>1.98KB</span>","children":null,"spread":false},{"title":"Properties","children":[{"title":"AssemblyInfo.cs <span style='color:#111;'>1.18KB</span>","children":null,"spread":false}],"spread":true}],"spread":true},{"title":"ConsoleApplication1.suo <span style='color:#111;'>10.00KB</span>","children":null,"spread":false},{"title":"ConsoleApplication1.sln <span style='color:#111;'>946B</span>","children":null,"spread":false}],"spread":true}],"spread":true}]