In: Computer Science
The following postfix expression
2 6 + 3 5 - /
evaluates to
Group of answer choices
-1
1
-4
4
this is not a postfix expression
In an array implementation of the StackInterface where push() and pop() are O(1), the top of the stack is
Group of answer choices
the first entry in the array
the last occupied entry in the array
the second entry in the array
the entry before the last ocuppied entry in the array
the first or the last occupied entry in the array
In ArrayStack implementation of StackInterface, what value of topIndex indicates that the stack is empty?
Group of answer choices
-1
0
1
null
None of the above
When you remove an item from a stack, you remove it from
Group of answer choices
top
bottom
the middle
wherever the client specifies
none of the above