A Stack interface is defined and has an isEmpty() abstract method. What should this method return?
a) an int representing the number of items in the stack
b) a double representing the average of the values of the items in the stack
c) a String representing the contents of the items in the stack.
d) a boolean value representing whether the stack is empty or not.
e) the item that is at the top of the stack
d) a boolean value representing whether the stack is empty or not.
Computer Science & Information Technology
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Computer Science & Information Technology
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Computer Science & Information Technology