Focus on Efficiency (2024 NG)

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Problem Overview

  • Core task: Given an integer array A, compute the minimum moves to turn an all-zero array into A by incrementing any chosen contiguous range by 1 per move.
  • Input/Output: Input is array A; output is a single integer (number of moves); constraints are not specified.
  • Context: Models batch range updates on contiguous data, focusing on efficiency and scalability.
  • Company: Asked in Google interviews; a 2024 NG coding interview problem and common interview question.

Example

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Input Variables
Execution Result: