maximum-product-of-three-numbers.cpp

class Solution {
public:
    int maximumProduct(vector<int>& nums) {
        int max1 = INT_MIN, max2 = INT_MIN, max3 = INT_MIN, min1 = INT_MAX,
            min2 = INT_MAX;
        for (int i = 0; i < nums.size(); i++) {
            if (nums[i] <= min1) {
                min2 = min1;
                min1 = nums[i];
            } else if (nums[i] <= min2) {
                min2 = nums[i];
            }
            if (nums[i] >= max1) {
                max3 = max2;
                max2 = max1;
                max1 = nums[i];
            } else if (nums[i] >= max2) {
                max3 = max2;
                max2 = nums[i];
            } else if (nums[i] >= max3) {
                max3 = nums[i];
            }
        }
        return max(min1 * min2 * max1, max1 * max2 * max3);
    }
};