Leetcode-414 Third Maximum Number(第三大的数)

class Solution
{
    public:
        const long long int MikuMikuMi = -393939393939;
        int thirdMax(vector<int>& nums)
        {
            long long int max1 = MikuMikuMi,max2 = MikuMikuMi,max3 = MikuMikuMi;
            for(auto d:nums)
            {
                if(d>max1)
                { 
                    max3 = max2;
                    max2 = max1; 
                    max1 = d;
                } 
                else if(d>max2 && d!=max1)
                {
                    max3 = max2;
                    max2 = d;
                }
                else if(d>max3 && d!=max2 && d!=max1)
                {
                    max3 = d;
                } 
            }
            return max3 != MikuMikuMi ? max3 : max1;
        }
};

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