Most Common Number

    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++;
                mostCommon = arr[i];
            } else
                counter = tempCounter > counter ? tempCounter : counter;
        }
        return mostCommon;
    }