In a linked list-based stack, which operation retrieves the element at the top of the stack?*1 pointa. Peekb. Popc. Accessd. Remove
Question
In a linked list-based stack, which operation retrieves the element at the top of the stack?*1 pointa. Peekb. Popc. Accessd. Remove
Solution
To retrieve the element at the top of the stack in a linked list-based stack, you can perform the following steps:
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Start by checking if the stack is empty. If it is empty, there are no elements to retrieve, so you can handle this case accordingly.
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If the stack is not empty, you can access the element at the top of the stack. This operation is commonly referred to as "peeking" at the top element.
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To perform the peek operation, you can simply access the value stored in the node that represents the top of the stack in the linked list.
Therefore, the correct answer to the question is option a. Peek.
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Which of the following is not part of the pop operation for a stack implemented using a linked list? A. adjust the top reference variable to point to the node pointed to by the next field of the node at the top of the stack B. declare a temporary reference variable and set it to point to the element at the top of the stack C. all of these are part of the pop operation for a stack implemented using a linked list D. determine if the stack is empty E. determine if the stack is full
The retrieval of items in a stack is ...........operation.a.Accessb.POPc.Retrieved.PUSH
The peek operation on a stack returns a reference to the element at the bottom of the stack. A. True B. False
The pop operation removes an element from the top of the stack.a.FALSEb.TRUE
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