Java: please don't use a built-in function to copy and paste the array example CopyArray,etc...

Write a method paste, which takes two arrays A and B and a value k as arguments, and returns a new array which inserts the array B at position k in the array A and returns the resulting array A {2, 4, 5, 6}, B = {8, 10, 12), k = 2. {2, 4, 8, 10, 12, 5, 6} {3, 4, 8}, B = {8, 10, 12, 20, 24), k = 0. {8, 10, 12, 20, 24, 3, 4, 8}