What is the complexity of the following tasks? 1) Finding the largest two elements in a queue of size n+3 using Nave search. 2) Remove

What is the complexity of the following tasks? 

1) Finding the largest two elements in a queue of size n+3 using Naïve search.

2) Remove the first item at the bottom of a stack data-structure of size n.

3) Inserting an item in a queue data-structure, this has already n elements.

4) Searching for a pattern of size K into a string of size T using KMP algorithm.

5) Searching for a pattern of size L into a string of size Y using Naïve algorithm.

6) Computing the mathematical average of all items in a queue of size 2n.

7) Searching for an element on a sorted list of length M using Binary Search algorithm.

8) Traverse a graph of N nodes and E edges using Breadth First Search algorithm