Expert answer:Write a static Recursive method isPermutation, Jav

Answer & Explanation:Write a static Recursive method isPermutation which has the following signature:
public static boolean isPermutation (int [] a, int [] b)
Which receives 2 int arrays which are filled with integers and returns true if they are a permutation one of another. means they contains the exact same of elements, but they may appear in a different order.
For example:if b = {3, 2, 4, 1} a = {1, 2, 3, 4} then method would return true.
if b = {3, 2, 4, 4}  a = {4, 2, 3, 4} then method would return true if b = {1, 2, 4, 2} a = {1, 2, 4, 4} then method would return false
if b = {3, 2, 4, 5} a = {1, 2, 3, 4} then method would return false
if b = {3, 2, 4, 1, 5}  a = {1, 2, 3, 4} then method would return false
Notice – No need to consider the complexity.the method must be recursive. no use of Loops at all.You can use overloading but not in external functions.You cannot use Global static variablesYou cannot use a helper array (It must run on the original array)

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