Hi all, I need some help with this textbook problem I can't figure out.

Write a method to determine if an array of integer values is sorted in non-decreasing order is given later. Write a method of equivalend fuctionality using recursoin. You need to complete both the shell method and the helper method. Note: Loops not allowed.

//shell method

public static boolean isSorted(int [ ] arr) {

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} // end shell method

// helper method (must use recursion)

//checks to see if arr[pos:arr.length-1] is sorted in non-decreasing order

private static boolean isSorted (int [ ] brr, int pos) {

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} // end helper method