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In conversion from prefix to postfix using stack data-structure, if operators and operands are pushed and popped exactly once, then the run-time complexity is ............

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What is the result of the following operationTop (Push (S, X))
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What happens when the stack is full and there is no space for a new element, and an attempt is made to push a new element?
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The prefix form of A-B/ (C * D ^ E) is?
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Consider following Scenario -1. The five items : P,Q,R,S and T are inserted into stack A one after other starting from T in reverse order.2. The stack is popped three times and each element is inserted into another stack B.3. Then two elements are deleted from the stack B and pushed back onto the stack A.What are the topmost elements of stack A and Stack B respectively?
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Post fix form of -(A + B) * C
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