Select the correct answerThe five items A,B,C,D and E are pushed in a stack, one after the other starting from A. The stack is popped 4 times and each element is inserted in a queue. Then two elements are deleted from the queue and pushed back on the stack. now one item is popped from the stack. The popped Item is:OptionsACDB
Question
Select the correct answerThe five items A,B,C,D and E are pushed in a stack, one after the other starting from A. The stack is popped 4 times and each element is inserted in a queue. Then two elements are deleted from the queue and pushed back on the stack. now one item is popped from the stack. The popped Item is:OptionsACDB
Solution
The answer to this question can be found by following the operations step by step.
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Push the items A, B, C, D, and E onto the stack. The top of the stack is now E.
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Pop the stack 4 times and insert each element into a queue. The stack now contains only A, and the queue contains E, D, C, and B in that order (with E at the front of the queue).
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Delete two elements from the queue and push them back onto the stack. The queue now contains C and B, and the stack contains D, E, and A (with D at the top of the stack).
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Pop one item from the stack. The popped item is D.
So, the correct answer is D.
Similar Questions
The five items A,B,C,D and E are pushed in a stack, one after the other starting from A. The stack is popped 4 times and each element is inserted in a queue. Then two elements are deleted from the queue and pushed back on the stack. now one item is popped from the stack. The popped Item is:OptionsBACD
Which of the following data structures allows to insert elements from one end and remove them from the same end?Group of answer choicesStackDequeBoth Deque and StackCircular Queue
The retrieval of items in a stack is ........... operation. Options push pop access None of these
Select the correct answerIf the elements in a queue have been inserted in order of 'a', 'b', 'c' and 'd', what would be order for the removal?OptionsbadcabcdNonedcba
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