diff --git a/README.md b/README.md
index 4ce219b..38af488 100644
--- a/README.md
+++ b/README.md
@@ -40,8 +40,28 @@ Downloads/
 |   |-- file6.unknown
 ```
 
+************************************************************************************************************************************************************
+
+## **Let's take about the algorithm:**
+
+we can divide the algorithm of the script into 4 parts:
+
+- Geting the path of the directory we wnat to organize.
+- Creating the sub-directories to organize the files and put them inside the sub-directories.
+- Organize the files and put them inside the sub-directories.
+- List the sub-directories and the files as a way of verfication to make sure that the algorithm is working as required.
+
+To-do that, I create four functions for each part:
+
+- GetPath 
+- MK_DIRS 
+- OrganizeFiles 
+- LS_DIRS
+
+## **The design:**
+
+![image](https://github.com/Ali-Elbana/M1-A2/assets/97269796/0d6e38f5-ef6e-4f29-bb02-ca72478ac794)
+
 
 
 
-## How to upload task on github.
-- Please refer to explanation video that has been sent through email.
diff --git a/file_organizer.sh b/file_organizer.sh
deleted file mode 100644
index c69a3ff..0000000
--- a/file_organizer.sh
+++ /dev/null
@@ -1,99 +0,0 @@
-#!/bin/bash
-
-#
-# > STATUS code that returned by this script.
-
-
-
-# Project Idea: File Organizer
-# The goal of this project is to create a Bash script that organizes files in a specified directory based on their file types into separate subdirectories. This can be useful to keep your directories clean and tidy by automatically sorting files into appropriate categories.
-#Features:
-#The script should take a directory path as an argument and organize the files within that directory.
-#It should create subdirectories based on the file extensions (e.g., "txt" for text files, "jpg" for image files).
-#Files with unknown or no file extensions should be placed in a "misc" subdirectory.
-#If a subdirectory for a particular file type already exists, the script should move the files into that existing directory.
-#The script should handle edge cases, such as files with no extensions or hidden files (those starting with a dot).
-# please provide status exit code for each case with echo message detect the failure.
-
-
-################################################################################################
-# SUPPORTED file extenstions: .txt, .jpg, .png, .hidden files.                                 #
-################################################################################################
-SUPPORTED_EXTENSIONS=('txt' 'jpg' 'png' '.')
-###############################################################################################
-# Helper functions:
-# 1. createDirectory.
-###############################################################################################
-createDirectory(){ 
-    local DIR_NAME=$1 # first argument.
-    if [ ! -d ${DIR_NAME} ] # check if directory is exists.
-    then
-        mkdir -p ${DIR_NAME}
-        echo "${DIR_NAME} is created".
-    fi
-}
-
-
-# read directory.
-read DIR
-
-# check if directory is exists or not.
-if [ -d ${DIR} ]
-then
-
-    # read all files inside this directory.
-    for file in ${DIR}/*;
-    do
-        # check if its file.
-        if [ ! -f ${file} ];
-        then
-            echo ${file} " is not a file"
-            continue # skip directories.
-        fi
-        # pattern matching, get extension.
-        FILE_EXTENSION=${file##*.}
-
-        FILE_EXTENSION=$(echo $FILE_EXTENSION | tr [:upper:] [:lower:])
-        DIRECTORY_PATH=${file%/*}
-        FILE_NAME=${file##*/}
-
-        if [ ${FILE_EXTENSION} == ${SUPPORTED_EXTENSIONS[0]} ];
-        then
-            # text folder.
-            createDirectory "${DIRECTORY_PATH}/text"
-            echo "Move:" ${file} "to --->: " "${DIRECTORY_PATH}/text/${FILE_NAME}"
-            mv ${file} "${DIRECTORY_PATH}/text/${FILE_NAME}"
-        elif [ ${FILE_EXTENSION} == ${SUPPORTED_EXTENSIONS[1]} ];
-        then
-            # jpg folder.
-            createDirectory "${DIRECTORY_PATH}/jpg"
-            echo "Move:" ${file} "to --->: " "${DIRECTORY_PATH}/jpg/${FILE_NAME}"
-            mv ${file} "${DIRECTORY_PATH}/jpg/${FILE_NAME}"
-        elif [ ${FILE_EXTENSION} == ${SUPPORTED_EXTENSIONS[2]} ];
-        then
-            # png folder.
-            createDirectory "${DIRECTORY_PATH}/png"
-            echo "Move:" ${file} "to --->: " "${DIRECTORY_PATH}/png/${FILE_NAME}"
-            mv ${file} "${DIRECTORY_PATH}/png/${FILE_NAME}"
-
-        elif [[ "${FILE_NAME}" == ^.* ]];
-        then
-            # hidden folder.
-            #echo hidden
-            createDirectory "${DIRECTORY_PATH}/hidden"
-            echo "Move:" ${file} "to --->: " "${DIRECTORY_PATH}/hidden/${FILE_NAME}"
-            mv ${file} "${DIRECTORY_PATH}/hidden/${FILE_NAME}"
-        else
-            # miscellaneous folder.
-            createDirectory "${DIRECTORY_PATH}/misc"
-            echo "Move:" ${file} "to --->: " "${DIRECTORY_PATH}/misc/${FILE_NAME}"
-            mv ${file} "${DIRECTORY_PATH}/misc/${FILE_NAME}"
-        fi
-
-    done
-else
-    echo "${DIR}, Directory is not exists"
-    exit 1
-fi
-
-
diff --git a/student-solution.sh b/student-solution.sh
new file mode 100755
index 0000000..fdf6081
--- /dev/null
+++ b/student-solution.sh
@@ -0,0 +1,75 @@
+#!/bin/bash
+
+DIR_PATH=""
+
+GetPath()
+{
+	read -p "Enter the path: " DIR_PATH	
+}
+
+MK_DIRS()
+{
+	cd ${DIR_PATH}
+	
+	DIRS=( "txt" "jpg" "pdf" "misc" )
+	
+	# if the directory not found create it #
+	for DIR in "${DIRS[@]}" ; do
+	
+		if [[ ! -d "$DIR" ]] ; then
+			mkdir "$DIR"
+		fi
+		
+	done
+}
+
+OrganizeFiles()
+{
+	for file in "$DIR_PATH"/* ; do
+		
+		# if the file is a directory skip it #
+		if [[ -d "$file" ]] ; then
+			continue
+		fi 
+		
+		if [[ "$file" == *.txt ]] ; then
+			mv "$file" "$DIR_PATH"/txt
+			
+		elif [[ "$file" == *.jpg ]] ; then
+			mv "$file" "$DIR_PATH"/jpg
+			
+		elif [[ "$file" == *.pdf ]] ; then
+			mv "$file" "$DIR_PATH"/pdf
+		
+		else
+			mv "$file" "$DIR_PATH"/misc
+		fi
+		
+	done
+}
+
+LS_DIRS()
+{
+
+	ls $DIR_PATH $DIR_PATH/txt $DIR_PATH/pdf $DIR_PATH/jpg $DIR_PATH/misc
+	
+}
+
+GetPath $DIR_PATH
+
+MK_DIRS $DIR_PATH
+
+OrganizeFiles $DIR_PATH
+
+LS_DIRS $DIR_PATH
+
+
+
+
+
+
+
+
+
+
+
diff --git a/student_solution.sh b/student_solution.sh
deleted file mode 100644
index 8b13789..0000000
--- a/student_solution.sh
+++ /dev/null
@@ -1 +0,0 @@
-