Add the information about number of problems in each section

Author: subhatav

README.md

@@ -6,9 +6,17 @@ Welcome to the VS Code Java world. Here is a guideline to help you get started t
 
 The workspace contains two folders by default, where:
 
-- `src`: the folder to maintain sources
+- `src`: the folder to maintain sources 
 - `lib`: the folder to maintain dependencies
 
+![GitHub repo file count (file extension)](https://img.shields.io/github/directory-file-count/ph4ntom-74/dsa-box/src/arrays?extension=java&label=arrays&logo=arrays&type=file)
+![GitHub repo file count (file extension)](https://img.shields.io/github/directory-file-count/ph4ntom-74/dsa-box/src/linkedlists?extension=java&label=linkedlists&logo=linkedlists&type=file)
+![GitHub repo file count (file extension)](https://img.shields.io/github/directory-file-count/ph4ntom-74/dsa-box/src/deques?extension=java&label=deques&logo=deques&type=file)
+![GitHub repo file count (file extension)](https://img.shields.io/github/directory-file-count/ph4ntom-74/dsa-box/src/queues?extension=java&label=queues&logo=queues&type=file)
+![GitHub repo file count (file extension)](https://img.shields.io/github/directory-file-count/ph4ntom-74/dsa-box/src/stacks?extension=java&label=stacks&logo=stacks&type=file)
+![GitHub repo file count (file extension)](https://img.shields.io/github/directory-file-count/ph4ntom-74/dsa-box/src/greedy?extension=java&label=greedy&logo=greedy&type=file)
+![GitHub repo file count (file extension)](https://img.shields.io/github/directory-file-count/ph4ntom-74/dsa-box/src/backtracking?extension=java&label=backtracking&logo=backtracking&type=file)
+
 Meanwhile, the compiled output files will be generated in the `bin` folder by default.
 
 > If you want to customize the folder structure, open `.vscode/settings.json` and update the related settings there.