Question 1 Consider the following operation performed on a stack of size 5.
Push(1);
Pop();
Push(2);
Push(3);
Pop();
Push(4);
Pop();
Pop();
Push(5);
After the completion of all operation, the number of elements present in stack are
(A) 1 (B) 2 (C) 3 (D) 4
push(1)
Element 1 is inserted into the empty stack
pop( )
Element 1 is deleted from the stack and the stack becomes empty
push(2)
Element 2 is inserted into the empty stack
push(3)
Element 3 is inserted into the stack
pop( )
Element 3 is deleted from the stack
push(4)
Element 4 is inserted into the stack
pop( )
Element 4 is deleted from the stack
pop( )
Element 2 is deleted from the stack and the stack becomes empty
push(5)
Element 5 is inserted into the stack and the final stack has 1 element
Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.
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