Question

Give the correct output for the following sequence of operations. Show all steps?
push(5)
push(8)
pop
push(2)
push(5)
pop
pop
pop
push(1)
pop

Answer 1

Answer:

8 5 2 5 1 this is the ans of the given question

Answer 2

output of the following sequence of operations is that the stack is empty

Explanation:

1. here, stack data structure is used as the operation push and pop are used on stack data structure.
2. push operation enters a data item in the stack and pop operation deletes a data item.
3. stacks follow the rule LIFO (last in first out) which means that when a pop operation occurs it deletes the last entered data item through push operation.
4. let the stack be denoted by 'S' hence following the given sequence of operations we get the output,                                                                                      $push(5)\ \ \ \ \ \ \ S-5\\push(8)\ \ \ \ \ \ S-5,8\\pop\ \ \ \ \ \ \ \ \ \ \ S-5 \\push(2)\ \ \ \ \ S-5,2 \\push(5)\ \ \ \ S-5,2,5\\pop\ \ \ \ \ \ \ \ \ S-5,2\\pop\ \ \ \ \ \ \ \ \ S-5,\\pop\ \ \ \ \ \ \ \ \ S-empty\\push(1)\ \ \ S-1\\pop\ \ \ \ \ \ \ \ \ S-empty$