C++ Linked List vs Array

What are the main differences between linked lists and arrays in C++?

The main differences include memory allocation, access time, and flexibility. Arrays have fixed size and faster access, while linked lists are dynamic and allow for efficient insertions and deletions.

When should I use a linked list instead of an array?

Use a linked list when you need dynamic memory allocation, frequent insertions/deletions, or when the size of the data structure is unknown.

Can you explain how memory is managed in both data structures?

In arrays, memory is allocated in a contiguous block, which can lead to wasted space. In linked lists, each element (node) is allocated separately, allowing for efficient use of memory but with overhead for storing pointers.

What are the performance implications of using one over the other?

Arrays provide O(1) access time but O(n) for insertions/deletions. Linked lists offer O(n) access time but O(1) for insertions/deletions, making them better for certain use cases.