fix: Hotfix/awesome zero files (TheAlgorithms#919)

* perf: faster implementation of the TwoSum problem

* doc: fixed typos on comments

* updating DIRECTORY.md

* fix: comments on includes. Doxygen file. static test function

* fix: revert 1.c

* updating DIRECTORY.md

* fix: 0 files are not in one and only one directory

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

.github/workflows/awesome_workflow.yml

@@ -137,10 +137,12 @@ jobs:
             print("\n".join(space_files) + "\n")
 
           nodir_files = [file for file in cpp_files if file.count(os.sep) != 1 and "project_euler" not in file and "data_structure" not in file]
-          nodir_file_bad_files = len(nodir_files) - 1
-          if nodir_file_bad_files:            
+          if len(nodir_files) > 1:            
+            nodir_file_bad_files = len(nodir_files) - 1
             print(f"{len(nodir_files)} files are not in one and only one directory:")
             print("\n".join(nodir_files) + "\n")
+          else:
+            nodir_file_bad_files = 0
             
           bad_files = nodir_file_bad_files + len(upper_files + space_files)
           if bad_files: