For the next 2 questions, assume a Stack ADT is implemented using a circular, si
ID: 3673493 • Letter: F
Question
For the next 2 questions, assume a Stack ADT is implemented using a circular, singly-linked chain of nodes with only a reference to the head of the chain, and where the top of the stack is at the head of the chain. What is the worst-case time complexity for the following Stack ADT operations given a size of N: 1.) push (E item) adds a new node containing item to the top of this stack. A. O() B. O(N) 2.) pop () removes the node at the top of this stack and returns its item. A. O( B. O(N) A reason to design an iterator class to directly access a collection's data structure is because the collection's public interface 3.) A.) does B.) does not support the operations required by the iterator. For the next 2 questions, you are given the following time equations for three methods: methodl is T(N) -22N3-5Nlog2N method2 is T(N) 3N2-7 method3 is T(N)-20N+ 11 For each of the following, is the statement true or false? Mark A for true or B for false 4.) method1 has quadratic time complexity. 5.) method3 is always the fastest method.Explanation / Answer
1. For pushthe time complexity is O(1).
2. For popping from the stack it is again o(1)
3.collection's public interface does not support operations required by the iterator.
4.B it is false .it has log N functon too so its comlexity will be in log.
5.A is is true since it is interns of N which is the faster as it does not have any power over the number N