Minimum Operations to Make Array Elements Zero

Problem Overview

• Given an integer array, find the minimum number of operations to make all elements zero.
• Each operation selects a prefix and increments or decrements every element in that prefix by 1.
• Input: array arr of n integers; Output: the minimum operations as an integer; a solution is guaranteed; constraints unspecified.
• Represents prefix-based batch adjustments in arrays, relevant to optimization and sequence processing.
• Asked in Amazon interviews; a common coding interview problem and interview question.