LeetCode1423. 可获得的最大点数

class Solution {
    
    
public:
    int maxScore(vector<int>& cardPoints, int k) {
    
    
        int current_sum = 0;

        int n = cardPoints.size();

        for (int i = 0; i < n - k; i++)
        {
    
    
            current_sum += cardPoints[i];
        }

        int total_sum = 0;
        for (int i = 0; i < n;i++)
        {
    
    
            total_sum += cardPoints[i];
        }

        int min_sum = current_sum;

        int left = 0, right = n - k - 1;

        while (right < n - 1)
        {
    
    
            left++;
            right++;
            current_sum += cardPoints[right] - cardPoints[left - 1];

            min_sum = min(current_sum, min_sum);
        }

        return total_sum - min_sum;
    }
};