亚马逊面试经历分享 亚麻OA面经：编程面试辅导 系统设计代面 技术问答代面
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亚马逊面试经历分享：编程面试辅导 系统设计代面 技术问答代面
面试经历分享
在亚马逊的在线面试（OA）过程中，我遇到了两道题目，分别考察了贪心算法和数据结构的应用。以下是详细的面试题目和我的解题思路：
第一题：Greedy Algorithm
题目描述： Amazon Web Services has n servers where the ith server's vulnerability score is vulnerability[i]. A client wants to deploy their application on a group of m contiguous servers. The vulnerability of a group is defined as the kth minimum vulnerability among the chosen servers. Find the vulnerability of each possible group of m contiguous servers the client can choose.
Example:
makefileCopy code
k = 2 m = 3 vulnerability = [1, 3, 2, 1]
There are 2 contiguous groups of m = 3 servers: [1, 3, 2] and [3, 2, 1]. The k = 2nd lowest vulnerability in each group is 2. Return the answers for each group, in order: [2, 2].
解题思路： 这道题目需要在每组连续的服务器中找到第k小的脆弱性。可以通过滑动窗口结合优先队列（heap）来实现高效的计算。
第二题：SortedDict / Heapq / QuickSort
题目描述： Amazon has multiple delivery centers and delivery warehouses all over the world! The world is represented by a number line from -10^9 to 10^9. There are n delivery centers, the one at location center[i]. A location x is called a suitable location for a warehouse if it is possible to bring all the products to that point by traveling a distance of no more than d. At any one time, products can be brought from one delivery center and placed at point x. Given the positions of delivery centers, calculate the number of suitable locations in the world. That is, calculate the number of points x on the number line (-10^9 <= x <= 10^9) where the travel distance required to bring all the products to that point is less than or equal to d.
Example: Given n = 3 center = [-2, 1, 0], d = 8 The various locations along with the distance traveled to bring all treasures at that point are Locate the warehouse at -3 First bring products from center[0]-2 covering a distance of |-3 - (- 2) |=1 to reach the center and |- 3 - (- 2)| = 1 to return. Similarly we bring products from the other centers.
The only suitable locations are (-1, 0, 1). Return 3.
解题思路： 这道题目需要计算可以将产品运送到某个位置的合适地点数量。可以通过使用有序字典、优先队列或者快速排序的方法来高效解决。
希望这些解题思路和技巧能对大家有所帮助。如果有任何问题或需要更多的面试辅导服务，欢迎添加微信 leetcode-king 进行咨询。
