Question: The peek method in the generic class LinkedStack returns a reference to the top element without removing it . Suppose we want to examine the

The peek method in the generic class LinkedStack returns a reference to the top element without removing it

.

Suppose we want to examine the second top element. Write a second method capable of returning a reference to the second top element without removing it

.

The method should return null if the stack is empty or there is no second element in the stack.

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