Minimum Moves to Match Arrays

Problem Overview

• Given two integer arrays arr1 and arr2, find the minimum number of element-wise increment/decrement moves to make arr1 equal to arr2; no reordering of digits.
• Inputs are equal-length arrays (1 ≤ n ≤ 1e5), elements up to 1e9 with equal digit counts per position; output is an int move count.
• Domain context: useful for aligning datasets with minimal adjustment or cost in data processing.
• Asked in Ibm interviews; a classic coding interview problem and interview question.