Really final mostCommon

    public static int mostCommonNum(int[] arr) {
        int mostCommon = arr[0];
        int counter = 0;
        int tempCounter = 0;
        for (int i = 0; i < arr.length - 1; i++) {
            if (arr[i] == arr[i + 1]) {
                counter++;
                System.out.println(arr[i] + "," + arr[i + 1]);
                System.out.println(counter);
            }
            if (tempCounter < counter) {
                tempCounter = counter;
                mostCommon = arr[i];
            }
            if (arr[i] != arr[i + 1]) {
                counter = 0;
            }
        }
        return mostCommon;
    }