2090. K Radius Subarray Averages
⭐️⭐️⭐️ # 題目敘述 You are given a 0-indexed array nums of n integers, and an integer k . The k-radius average for a subarray of nums centered at some index i with the radius k is the average of all elements in nums between the indices i - k and i + k (inclusive). If there are less than k elements before...
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