The following operations are applied to an empty stack s: s.push(1) s.push(2) s.push(3) s.pop() s.push(4) s.pop() The result of a further s.pop() is . . . a) a number b) undefined c) 4
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The following operations are applied to an empty stack s:
s.push(1)
s.push(2)
s.push(3)
s.pop()
s.push(4)
s.pop()
The result of a further s.pop() is . . .
a) a number
b) undefined
c) 4
d) 2
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- Let a stack of N=5 elements be denoted as: S={3,7,9,2,_}What would the stack look like after the following operations?pop( )pop( )push(11)push(3)pop( )pop( )pop( ) Select one: a.S={3,7,3,11,_} b.S={3,7,11,3,_} c.S={3,_,_,_,_} d.S={11,_,_,_,_} e.S={3,7,11,_,_}The following operations are performed on a stack:PUSH A, PUSH B, POP, PUSH C, PUSH D, POP, PUSH E, POP, POP, PUSH FWhat does the stack contain after the PUSH F?a. Fb. A B C D E Fc. A C Fd. A Fe. none of the above.A letter means enqueue and an asterisk means dequeue in the following sequence. Give the sequence of values returned by the dequeue operations when this sequence of operations is performed on an initially empty LIFO stack: S O * B E A U * * * T * I F * * U L *. What is front and back values? (Write your answer in uppercase letters separated by comma(,) only. No need to write "front" and "back".) *
- A letter means push and an asterisk means pop in the following sequence. Give the contents of s[0], ..., s[4] after the execution of this sequence of operations performed on an initially empty LIFO stack. L A * S T I * N * F I R * S T * * O U * T * * * * * *The school cafeteria offers circular and square sandwiches at lunch break, referred to by numbers 0 and 1 respectively. All students stand in a queue. Each student either prefers square or circular sandwiches. The number of sandwiches in the cafeteria is equal to the number of students. You are given two integer arrays students and sandwiches where sandwiches[i] is the type of the ith sandwich in the stack (i = 0 is the top of the stack) and students[j] is the preference of the jth student in the initial queue (j = 0 is the front of the queue). Part 1: Modify the code given and make it more efficient. You can try to implement your own stack or your own Queue. Or you can use the sandwiches array as a stack without making a separate Stack class. Same with the students array. Part 2: After modifying the code, explain how it works, and why it is more efficient than the solution that you started with. (Or, if it turns out that the change you made is not more efficient, try to…Select true or false for the statements below. Explain your answers if you like to receive partial credit 4) Given a stack implemented as a standard linked list (only a head pointer) with O(1)push and O(1) pop, and the following functions are performed in sequence:Push(“Charmander”), Push(“Squirtle”), Push(“Bulbasaur”), Pop(), Push(“Larvitar”),Push(“Eevee”), Pop(), Pop()Which of the following is true after all the functions are executed?a. Charmander and Squirtle will be the only elements left on the stackb. The head node will be pointing to Charmanderc. If you Push(“Pikachu”), it will be the last node of the linked list
- There is one stacks and one queue q and then following operations are performed upon these two. Push A, enqueue B, push C, pop, pop, enqueue D, push E, dequeue, enqueue F .What is the total number of elements, which are left in the queue and stack in the end.A SpecialStackTM is a stack modified to support the following two operations: PUSHCLEAR(v) successively pops consecutive items from the top of the stack that are less than u, then pushes v onto the stack. POP() deletes the item at the top of the stack. Assume these operations are implemented using a singly-linked list. PUSHCLEAR(v) iter- ates through the linked list to pop the applicable items and then adds v to the beginning. POP() deletes the first item. (a) Describe the ordering of values on the stack. (b) Explain how a single call to PUSHCLEAR(V) could take (n) time. (c) If we assume that every operation takes linear time, we get a naive bound of O(n²) on the total runtime. But this doesn't consider the fact that these expensive operations happen infrequently so let's analyze it more closely. Show that any sequence of n operations takes O(n) time. -Create a stack S of ten elements. Take a number x from the user and delete the elements smaller than or equal to X from the stack. Example: Suppose your initial stack is S where you pushed 10 elements as below- Top {9, 3, 4, 15, 20, 1, 6, 4, 9, 10} Bottom X is taken as input and X= 6. Then pop out and remove the elements greater than or equal to X. Finally, the stack will look like- Top {3, 4, 1, 4} Bottom In c++ Please
- Given the following stack A = {29, 18, 10, 15, 20, 9, 5, 13, 2, 4, 15} Create a queue by taking the elements from the top of the stack and adding them to the queue.Create a stack S of ten elements. Take a number x from the user and delete the elements smaller than or equal to X from the stack.Example: Suppose your initial stack is S where you pushed 10 elements as below- Top {9, 3, 4, 15, 20, 1, 6, 4, 9, 10} BottomX is taken as input and X= 6. Then pop out and remove the elements smaller than or equal to X. Finally, the stack will look like-Top {9, 15, 20, 9, 10} Bottomin c++ pleaseCreate a stack S of ten elements. Take a number x from the user and delete the elements smaller than or equal to X from the stack.Example: Suppose your initial stack is S where you pushed 10 elements as below- Top {9, 3, 4, 15, 20, 1, 6, 4, 9, 10} Bottom4. X is taken as input and X= 6. Then pop out and remove the elements smaller than or equal to X. Finally, the stack will look like-Top {9, 15, 20, 9, 10} BottomYou can use only one additional queue to solve this problem.In c++ please