Lec 32: GATE 2024 Preparation | GATE 2023 PYQ By Jayesh Umre
Consider a sequence a of elements a0=1,a1=5,a2=7,a3=8,a4=9, and a5=2. The following operations are performed on a stack S and a queue Q, both of which are initially empty.
1. push the elements of a from a0 to a5 in that order into S.
2. enqueue the elements of a from a0 to a5 in that order into S.
3. pop an element from S.
4. dequeue an element from Q.
5. pop an element from S.
6. dequeue an element from Q.
7. dequeue an element from Q and push the same element into S.
8. Repeat operation VII three times.
9. pop an element from S.
10. pop an element from S.
The top element of S after executing the above operations is ______________.
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