To solve this problem, we need to add a new method to the existing SimpleList class that allows retrieving the value of an element at a specific index in the list.

Approach

The approach to solve this problem is straightforward:

1. Define the Method: Add a method named get to the SimpleList class.
2. Parameter Handling: The method should take an index parameter, which specifies the position of the element to retrieve.
3. Return the Element: Use the index to access the element from the internal list (self.items) and return it. This follows the standard behavior of list indexing in Python, including raising an IndexError if the index is out of bounds.

Solution Code

class SimpleList:
    def __init__(self):
        self.items = []

    def add(self, item):
        self.items.append(item)

    def remove(self, item):
        if item in self.items:
            self.items.remove(item)
            return True
        return False

    def get_size(self):
        return len(self.items)

    def get(self, index):
        return self.items[index]

Explanation

• Class Initialization: The __init__ method initializes an empty list (self.items) to store elements.
• Add Method: The add method appends an item to the list.
• Remove Method: The remove method deletes an item from the list if it exists and returns True; otherwise, it returns False.
• Get Size Method: The get_size method returns the number of elements in the list.
• Get Method: The get method takes an index and returns the element at that index from self.items. If the index is out of bounds (e.g., negative or greater than the last valid index), it raises an IndexError (consistent with Python's list behavior).

This solution efficiently adds the required functionality while maintaining consistency with standard list operations. The time complexity of the get method is O(1) since accessing an element by index in a list is a constant-time operation. The space complexity remains O(n) where n is the number of elements in the list, as no additional space is used beyond the existing list.

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