7. Suppose we have an integer-valued stack S and a queue Q. Draw the contents of both Sand Q at each step indicated by the line. Be sure to identify which end is the top of S andthe front of Q.Stack S;Queue Q;S.push(3);S.push(2);S.push(1);Qenqueue(3);Qenqueue(2);Qenqueue(1);int x = S.pop():Qenqueue(x);x = Qdequeue();benqueue(Q.dequeue();S.push(Q peek());I/ peek() function reads the front of a queue without deleting it 2. Consider the following stack of characters, where STACK maximum size is 8 memorycells. STACK: A, C, D, F, K,Describe the stack as the following operations take place:where "" denotes an empty memory cell.(c) PUSH (L)(a) POP( )(e) POP()(b) POP( )(f) PUSH (R) (8) PUSH (S)(d) PUSH (P)(h) POP( )3. Suppose STACK has 6 memory cells as its maximum size and initially its top= -1. Findthe output of the following pscudo code:1. a:= 2; b:= 5;2. push (a);3. push (b+2);4. push (9);5. while (top = -1)6. { pop ( item);7. print item; )4. Convert the following infix expression into postfix ones:i. (A + B) * (D/E)ii. (A+B^D)/(D-F) + Giii. A*(B+ D)/ E-F* (G + H/ K)5. Evaluate the postfix expression A BCD- *+, where A = 25, B = 2, C = 18 and D-13

As per the answering guidelines solving the first question completely. Q7. Queue follows FIFO…

Suppose we have an integer-valued stack S and a queue Q. Draw the contents of both S and Q at each step indicated by the line. Be sure to identify which end is the top of S and the front of Q. Stack S; Queue Q; S.push(3): S.push(2): S.push(1); Qenqueue(3): Qenqueue(2); Qenqueue(1); int x= S.pop(): Qenqueue(x); x=Q dequeue(); benqueue(Q.dequeue(); S.push(Q peek()): I/ peek() function reads the front of a queue without deleting it

Suppose we have an integer-valued stack S and a queue Q. Draw the contents of both S and Q at each step indicated by the line. Be sure to identify which end is the top of S and the front of Q. Stack S; Queue Q; S.push(3): S.push(2): S.push(1); Qenqueue(3): Qenqueue(2); Qenqueue(1); int x= S.pop(): Qenqueue(x); x=Q dequeue(); benqueue(Q.dequeue(); S.push(Q peek()): I/ peek() function reads the front of a queue without deleting it

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

7. Suppose we have an integer-valued stack S and a queue Q. Draw the contents of both S
and Q at each step indicated by the line. Be sure to identify which end is the top of S and
the front of Q.
Stack S;
Queue Q;
S.push(3);
S.push(2);
S.push(1);
Qenqueue(3);
Qenqueue(2);
Qenqueue(1);
int x = S.pop():
Qenqueue(x);
x = Qdequeue();
benqueue(Q.dequeue();
S.push(Q peek());
I/ peek() function reads the front of a queue without deleting it

2. Consider the following stack of characters, where STACK maximum size is 8 memory
cells. STACK: A, C, D, F, K,
Describe the stack as the following operations take place:
where "
" denotes an empty memory cell.
(c) PUSH (L)
(a) POP( )
(e) POP()
(b) POP( )
(f) PUSH (R) (8) PUSH (S)
(d) PUSH (P)
(h) POP( )
3. Suppose STACK has 6 memory cells as its maximum size and initially its top= -1. Find
the output of the following pscudo code:
1. a:= 2; b:= 5;
2. push (a);
3. push (b+2);
4. push (9);
5. while (top = -1)
6. { pop ( item);
7. print item; )
4. Convert the following infix expression into postfix ones:
i. (A + B) * (D/E)
ii. (A+B^D)/(D-F) + G
iii. A*(B+ D)/ E-F* (G + H/ K)
5. Evaluate the postfix expression A BCD- *+, where A = 25, B = 2, C = 18 and D-13

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