剑指OFFER----面试题61. 扑克牌中的顺子

链接：https://leetcode-cn.com/problems/bu-ke-pai-zhong-de-shun-zi-lcof/

代码

class Solution {
public:
    bool isStraight(vector<int>& nums) {
        if (nums.empty()) return false;
        sort(nums.begin(), nums.end());
        int k = 0;
        while (!nums[k]) k++;
        for (int i = k + 1; i < nums.size(); ++i) {
            if (nums[i] == nums[i - 1]) return false;
        }
        return nums.back() - nums[k] <= 4;
    }
};