I need help writing this function,

Problem 9. Are identical not sorted? Given two vectors of integers A and B (not sorted). Write a function that determines whether A is a permutation of B (have the same elements as B, but the items might be in a different order). Assume that maximum of Ais a relatively small number. Your function will return true if A is a permutation of B; otherwise, it will return false. Hint: Use what you have learned while working on Problems 1-8, to implement your function efficiently. You need to write the following function with the exact header as shown: bool areldenticalNotSorted(const vectorcint> &A, const vectorcint> &B)