Introduction - If you have any usage issues, please Google them yourself
There are two sets, A collection of content: {1,2,3,4}, B contents of the collection is: {1,2,5,6}, the symmetric difference of two sets is defined as A Δ B = (A- B) ∪ (B- A), the A, B the symmetric difference of two sets is {3,4,5,6}. Write a program, set with the hash sum of two sets A, B the symmetric difference of sets, that is seeking.