ACWING81. Poker straight (to prove safety offer)

Randomly playing cards from the card 5, a determination is not straight, i.e., five cards are not continuous.

2 to 10 as the number itself, A is 1, J is 11, Q is 12, K 13, any number can be seen as the king size.

For convenience, the king size 0 are represented and assume the deck are two king size.

Sample 1
Input: [8,9,10,11,12]

Output: true
Sample 2
Input: [0,8,9,11,12]

Output: true

class Solution {
public:
    bool isContinuous( vector<int> numbers ) {
        int n = numbers.size();
        if(n == 0) return false;
        sort(numbers.begin(),numbers.end());
        int zero = 0;
        for(int i = 0;i < n;i++) {
            if(numbers[i] == 0) {
                zero++;
                continue;
            }
            if(i >= 1 && numbers[i - 1] != 0){
                int num = numbers[i] - numbers[i - 1];

                if(num == 1) continue;
                else if(num > 1 && zero >= num - 1)  {
                    zero -= num - 1;
                }
                else return false;
            }
        }
        return true;
    }
};