What is the difference between a queue and a stack?

  • In a queue, elements are added at one end and removed from the other end. In a stack, elements are added and removed from the same end.
  • Queues follow LIFO (Last In, First Out) order, while stacks follow FIFO (First In, First Out) order.
  • Queues support constant-time access to any element, while stacks do not.
  • Stacks are only used for numerical data, while queues can store any data type.
The main difference between a queue and a stack lies in their order of operation. In a queue, elements are added at one end (rear) and removed from the other end (front), following FIFO (First In, First Out) order. In contrast, stacks follow LIFO (Last In, First Out) order, where elements are added and removed from the same end (top).
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