Amazon OA Maximize Quality Score of Products – OA 代写 – 面试代面 – 面试辅助

Maximize Quality Score of Products

Problem Statement
Imagine you're a seller on Amazon specializing in eco-friendly products. Each of your items is rated by customers based on its quality and environmental impact.

The overall qualityScore of your products is determined by the sum of consecutive ratings.

To improve the qualityScore, you are given two strategies:

  1. Amplify Ratings: Select a contiguous segment of ratings and amplify each rating in that range by impactFactor.
  2. Adjust Ratings: Select a contiguous segment of ratings and adjust them by dividing each rating in that range by impactFactor (use the ceiling value for negative ratings).

Your task is to determine the maximum possible qualityScore after applying exactly one of these strategies.

Example

  • Input:
    ratings = [5, -3, -3, 2, 4], impactFactor = 3
  • Output: 12

Explanation:

  • Try both strategies on different ranges:
    • Amplify [4, 5]: [5, -3, -3, 4*2, 2*3] = [5, -3, -3, 8, 12], qualityScore = 12.
    • Adjust [2, 3]: [5, ceil(-3/3), ceil(-3/3), 2, 4] = [5, -1, -1, 2, 4], qualityScore = 9.
      Thus, the answer is 12.

Detailed Table for Example:

StrategySegment (1-based indexing)Modified RatingsqualityScore
Amplify[1, 1][5*2, -3, -3, 2, 4]10
Adjust[2, 3][5, -1, -1, 2, 4]9
Amplify[4, 5][5, -3, -3, 8, 12]12

If we perform the first strategy on the subsegment [4, 5] (1-based indexing), we get the ratings [5, -3, -3, 8, 12] with a qualityScore of 12, which is the maximum.
Thus, the answer is 12.

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