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Which of the following is a valid operation for a stack?

Practice Questions

Q1
Which of the following is a valid operation for a stack?
  1. Enqueue
  2. Dequeue
  3. Push
  4. Insert

Questions & Step-by-Step Solutions

Which of the following is a valid operation for a stack?
  • Step 1: Understand what a stack is. A stack is a data structure that follows the Last In, First Out (LIFO) principle.
  • Step 2: Know the basic operations of a stack. The main operations are 'push' (to add an item) and 'pop' (to remove the top item).
  • Step 3: Identify the operation in the question. The question asks which operation is valid for a stack.
  • Step 4: Recognize that 'push' is a valid operation because it allows you to add an element to the top of the stack.
  • Step 5: Conclude that 'push' is the correct answer.
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