Length of the largest subarray with contiguous elements

LengthLargestSubArray.java

public class LengthLargestSubArray {
    public static void main(String[] args) {
        int arr[] = {1, 2, 3, 4, 5, 6, 10, 8, 7, 9};
        System.out.println("Length of the largest subArray is " + lengthLargestSubArray(arr));
    }

    private static int lengthLargestSubArray(int[] arr) {
        Arrays.sort(arr);
        int counter = 0;
        int maxCounter = 0;
        for (int i = 1; i < arr.length; i++) {
            if (arr[i] == arr[i - 1] + 1) {
                counter++;
                maxCounter = Math.max(maxCounter, counter);
            } else
                counter = 0;
        }
        return ++maxCounter;
    }
}