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Algorithm

滑动窗口 LeetCode #1243

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fun maxScore(cardPoints: IntArray, k: Int): Int {
    val range = cardPoints.size - k
    var sum = 0
    repeat(range) {
        sum += cardPoints[it]
    }
    var minSum = sum
    var tempSum = sum
    for (i in range until cardPoints.size) {
        sum += cardPoints[i]
        tempSum += cardPoints[i] - cardPoints[i - range]
        minSum = minOf(minSum, tempSum)
    }
    return sum - minSum
}

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