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题目描述

题解思路

题目所求结果存在下述等式

• 可获得的最大点数 = 所有卡牌的点数之和 - 长度为（卡牌数量 - k）的窗口的点数之和的最小值

我们遍历长度为（卡牌数量 - k）的窗口，记录窗口内的所有点数之和的最小值

题解代码

impl Solution {pub fn max_score(card_points: Vec<i32>, k: i32) -> i32 {let k = card_points.len() - k as usize;let mut sum = 0;for i in 0..k {sum += card_points[i];}let mut min_win = sum;let mut win = sum;for i in k..card_points.len() {sum += card_points[i];win += card_points[i] - card_points[i-k];min_win = min_win.min(win);}sum - min_win}
}

题目链接

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