The condition (top == -1) is used to check which of the following situation?a.Overflowb.Underflowc.isFull()d.None of the aboveClear my choice
Question
The condition top == -1 is used to check which of the following situation?
a. Overflow
b. Underflow
c. isFull()
d. None of the above
Clear my choice
Solution
The condition (top == -1) is used to check the underflow situation in the context of a stack data structure in computer science.
Here's the step by step explanation:
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In a stack data structure, 'top' is a variable that always points to the topmost element in the stack.
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The 'top' variable is initialized with -1 when the stack is empty, meaning there are no elements in it.
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Therefore, if 'top' is equal to -1, it means the stack is empty.
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Trying to remove an element from an empty stack is known as 'underflow'.
So, the condition (top == -1) is used to check the underflow situation. Hence, the answer is b. Underflow.
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