You have some question about C++, can you help me answer it and explain to me? (Please do not copy and paste from other website)

1) How is Polymorphism like a Switch statement?

2) Explain what are the key characteristics of Big O

3) Explain the math behind each Big O. Give three(3) examples of each

O(1)
O(logn)
O(n)
O(nlogn)
O(n^2)
O(2^n)
O(n!)
O(|E|+|V|) - Graph
O(|E|*|V|) - Graph
O(n+m)

4) Are there other Big O possibilities?

5) Given an algorithm, how do you determine its Big O . Find two algorithms and explain how you determined their Big O.