In a stack, what will be the result of popping an element from an empty stack?
Practice Questions
Q1
In a stack, what will be the result of popping an element from an empty stack?
Return null
Throw an exception
Return 0
Return -1
Questions & Step-by-Step Solutions
In a stack, what will be the result of popping an element from an empty 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 what 'popping' means. Popping an element means removing the top element from the stack.
Step 3: Recognize what an empty stack is. An empty stack has no elements in it.
Step 4: Consider what happens when you try to pop from an empty stack. Since there are no elements to remove, the operation cannot be completed.
Step 5: Learn that trying to pop from an empty stack usually results in an error or exception. This is a way for the program to tell you that the action is not allowed.
