In which scenario would a linked list be preferred over an array?

Practice Questions

Q1
In which scenario would a linked list be preferred over an array?
  1. When the size of the data is known
  2. When frequent insertions and deletions are required
  3. When random access is needed
  4. When memory is limited

Questions & Step-by-Step Solutions

In which scenario would a linked list be preferred over an array?
  • Step 1: Understand what a linked list is. A linked list is a data structure where each element (node) points to the next one.
  • Step 2: Understand what an array is. An array is a collection of elements stored in a contiguous block of memory.
  • Step 3: Know that arrays have a fixed size. Once you create an array, you cannot change its size easily.
  • Step 4: Learn that linked lists can grow and shrink easily. You can add or remove nodes without worrying about the size.
  • Step 5: Recognize that inserting or deleting an element in an array can take time proportional to the number of elements (O(n)).
  • Step 6: Understand that inserting or deleting an element in a linked list can be done quickly (O(1)) if you have a pointer to the location.
  • Step 7: Conclude that if you need to frequently add or remove elements, a linked list is better than an array.
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