Solution/final

projects/006-run-length-decoding/python/main.py

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+'''
+Run-length encoding is a simple data compression technique that can be effective 
+when repeated values occur at adjacent positions within a list. 
+
+Compression is achieved by replacing groups of repeated values with one copy of the value, 
+followed by the number of times that it should be repeated.   
+For example, the list  
+`["A", "A", "A", "A", "A", "A", "A", "A", "A", "A", "A", "A", "B", "B", "B","B","A","A","A","A","A","A","B"]`  
+would be compressed as `["A",12,"B",4,"A",6,"B",1]`. 
+
+Decompression is performed by replicating each value in the list the number of times indicated.
+
+Write a recursive function that decompresses a run-length encoded list. 
+Your recursive function will take a run-length compressed list as its only argument. 
+It will return the decompressed list as its only result. 
+
+Create a main program that displays a run-length encoded list and the result of decoding it.
+'''
+
+def decompression(array):
+    if len(array) == 0:
+        return []
+
+    value = array[0]
+    count = array[1]
+    finalvalue = [value] * count + decompression(array[2:])
+
+    return finalvalue
+
+def main():
+    array = ["A", 12, "B", 4, "A", 6, "B", 1]
+    print(decompression(array))
+
+if __name__ == "__main__":
+    main()

projects/final-project/main.py

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+'''
+# **Cataloger of Household elements 🏡**
+
+This project is to develop a household element cataloger, 
+a tool that helps users catalog and manage elements in their homes.   
+The cataloger will use recursion to explore home environments in depth, gathering information about elements, 
+such as name, location, and category.   
+It will also provide functionality to search, add, edit, and delete elements from the catalog, 
+simplifying home inventory management.
+
+
+## **elementive 🎯**
+The goal of the project is to provide users with a practical tool for cataloging and keeping
+track of elements in their home.   
+Using variables, strings, mathematical calculations, conditional operators, loops, functions, arrays, JSON elements, 
+and recursive functions, the cataloger will enable users to effectively organize their household elements 
+and obtain detailed information about them.
+
+## **Recursive exploration of home environments 🔁**
+
+- Using a recursive function, explore home environments, such as rooms and closets, to identify the elements present.  
+- Gather information about elements, such as name, location, and category.
+- Use an appropriate data structure, such as an array of JSON elements, to store element information.
+
+## **Adding new elements ➕**
+
+- Using a function, allow the user to add new elements to the catalog.
+- Capture the element's information, such as name, location, and category, and create a new JSON element with that information.
+- Add the element to the home element catalog.
+
+## **Modify existing elements ✍️**
+
+- Using a recursive function, allow the user to search and edit existing elements in the catalog.
+- Allow the user to edit the element's information, such as name, location, or category.
+- Update the corresponding JSON element in the catalog with the new information.
+
+
+## **element deletion ➖**
+
+- Using a recursive function, allow the user to search for and delete existing elements in the catalog.
+- Remove the corresponding JSON element from the home element catalog.
+
+## **Limitations ✋**
+
+- The project focuses on cataloging and management of household elements, without including features such as element 
+  quantity management or integration with more complex inventory systems.
+- Interactions with external databases or other sources of additional information are not considered.
+
+## **Project Duration ⏲️**
+
+Considering the functionality required and the use of the specified constructs, 
+the project is expected to take about 1 to 2 days to complete.
+'''
+
+def check_environment(catalog, index = 0, room = ""):
+    if catalog:
+        if index == 0:
+            room = input("Please input which room do you want to explore: ")
+        if catalog[index]["location"] == room:
+            print(catalog[index])
+            return catalog
+        index += 1
+        return check_environment(catalog, index, room)
+    return catalog
+
+def add_element(catalog):
+    name = input("Please input the name of the element: ")
+    location = input("Please input the position of the element: ")
+    category = input("Please input the category of the element: ")
+    element = {"name": name,"location": location,"category": category}
+    catalog.append(element)
+    print("element added correctly!")
+
+def change_element(catalog, name):
+    if catalog:
+        if catalog[0]["name"] == name:
+            catalog[0]["name"] = input("Please input new name: ")
+            catalog[0]["location"] = input("Please input new location: ")
+            catalog[0]["category"] = input("Please input new category: ")
+            print("Element modified correctly")
+            return catalog
+        return change_element(catalog[1:], name)
+    print("Element not found\n", catalog)
+    return catalog
+
+def delete_element(catalog, name, index = 0):
+    if catalog:
+        if catalog[index]["name"] == name:
+            del catalog[index]
+            print("Element deleted correctly")
+            return catalog
+        index += 1
+        return delete_element(catalog, name, index)
+    print("element not found\n", catalog)
+    return catalog
+
+def main():
+    catalog = [{"name": "Fra", "location": "Living", "category": "Computer"}, 
+                {"name": "Mattia", "location": "Kitchen", "category": "Box"}, 
+                {"name": "Simone", "location": "Bathroom", "category": "Soap"}]
+    userchoice = input("Please choose one of the following options\n 1. Search\n 2. Add\n 3. Edit\n 4. Delete\n")
+    while userchoice != "":
+        if userchoice == "1":
+            check_environment(catalog)
+        elif userchoice == "2":
+            add_element(catalog)
+        elif userchoice == "3":
+            name = input("Please input the name of which element you would like to modify?\n")
+            change_element(catalog, name)
+        elif userchoice == "4":
+            name = input("Please input the name of which element you would like to delete?\n")
+            delete_element(catalog, name, index = 0)
+        userchoice = input("Please choose one of the following options\n 1. Search\n 2. Add\n 3. Edit\n 4. Delete\n")
+
+if __name__ == '__main__':
+    main()