Question

Question 4 (3 points) How do you check for underflow and overflow conditions when operating on a stack in Java? Answer (Multiple Choice):

a) () An underflow condition occurs when the top is outside of the range [0, sizeOfArray-1] and a push operation is performed on the stack. An overflow condition occurs when the top is equal to sizeOfArray-1 and a pop operation is performed on the stack.
b) () An underflow condition occurs when the top is outside of the range [0, sizeOfArray-1] and a pop operation is performed on the stack. An overflow condition occurs when the top is equal to sizeOfArray-1 and a push operation is performed on the stack.
c) () An overflow condition occurs when the top is outside of the range [0, sizeOfArray-1] and a pop operation is performed on the stack. An underflow condition occurs when the top is equal to sizeOfArray-1 and a push operation is performed on the stack.
d) () An underflow condition occurs when the size of the array is an even number. An overflow condition oceurs when the size of the array is an odd number.

Answer 1

To detect underflow in a stack, check if a pop operation is attempted when the stack is empty (top is -1). To detect overflow, check if a push operation is attempted when the stack is full (top is sizeOfArray-1).

Step-by-step explanation:

When operating on a stack in Java, underflow and overflow conditions can occur when the stack is too empty or too full, respectively. The correct answer to check for these conditions is option (b).

• An underflow condition occurs when trying to perform a pop operation from an empty stack, meaning when the top index is outside of the range [0, sizeOfArray-1], typically when the top index is at -1.
• An overflow condition occurs when trying to perform a push operation on a full stack, meaning when the top index is equal to sizeOfArray-1 and you attempt to add another element.