What are the advantages and disadvantages of using an index for searching elements in an ArrayList?

Advantages of using an index for searching in ArrayList:

• Fast access by index (operation in O(1)), since ArrayList is implemented based on an array.

Disadvantages:

• Searching for an element by value using an index is impossible without iteration if the index is unknown.
• If you need to find an element by value, you will have to go through the entire list (O(n)).

Example of index access:

ArrayList<String> list = new ArrayList<>();
list.add("apple");
list.add("banana");
String fruit = list.get(1); // "banana"

Thus, the index is convenient for direct access but not for searching by value.