Day 071- Maximum Points You Can Obtain from Cards

// https://leetcode.com/problems/maximum-points-you-can-obtain-from-cards/


class Solution {
    public int maxScore(int[] cardPoints, int k) {
    int leftmost = 0;
    int rightmost = 0;
    int n = cardPoints.length;
        for(int i = 0;i<k;i++)
        {
            leftmost = leftmost+cardPoints[i];
        }
        int max  = leftmost;
        for(int j = 0;j<k;j++)
        {
            leftmost = leftmost-cardPoints[k-1-j];
            rightmost = rightmost+cardPoints[n-1-j];
            max = Math.max(max,leftmost+rightmost);
            
        }
        return max;
    }
}