【剑指offer】扑克牌的顺子

public boolean (int[] numbers) {
    if (numbers == null || numbers.length < 1)
        return false;

    Arrays.sort(numbers);
    int numOfZero = 0;
    int numOfGap = 0;

    for (int i = 0; i < numbers.length - 1; i++) {
        if (numbers[i] == 0)
            numOfZero++;
        else if (numbers[i] == numbers[i+1])
            return false;
        else
            numOfGap += numbers[i+1] - numbers[i] - 1;
    }

    return numOfZero >= numOfGap ? true : false;
}