Which data structure allows for efficient last-in, first-out (LIFO) operations?

Practice Questions

Q1
Which data structure allows for efficient last-in, first-out (LIFO) operations?
  1. Queue
  2. Array
  3. Stack
  4. Linked List

Questions & Step-by-Step Solutions

Which data structure allows for efficient last-in, first-out (LIFO) operations?
  • Step 1: Understand what LIFO means. LIFO stands for Last-In, First-Out, which means the last item added is the first one to be removed.
  • Step 2: Learn about the stack data structure. A stack is a collection of elements that follows the LIFO principle.
  • Step 3: Visualize how a stack works. Imagine a stack of plates; you can only take the top plate off first.
  • Step 4: Recognize the operations of a stack. The main operations are 'push' (to add an item) and 'pop' (to remove the top item).
  • Step 5: Conclude that a stack is the data structure that allows for efficient LIFO operations.
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