Question

Which one is an input function for stack ?

• A. POP
• B. PUSH
• C. Binary
• D. Traversal

Hint:

You PUSH items onto a stack and POP them off.

Answer 1

The Correct Option is B

Step 1: Define stack operations. A stack has two primary operations:

Push: Adds an element to the top of the stack. This is the "input" operation.
Pop: Removes the element from the top of the stack. This is the "output" operation.

Step 2: Match the term to the operation. The function to add or "input" an element to the stack is called PUSH.