Minimum Difference Sum

Problem Overview

• Rearrange an array of n integers to minimize the sum of absolute differences between adjacent elements, then return that sum.
• Input: int arr[] with 2 ≤ n ≤ 1e5 and 0 ≤ arr[i] ≤ 1e9; Output: int minimized adjacent-difference total.
• Relevant to ordering tasks where smoothing consecutive values reduces cost, fluctuation, or risk.
• An Oracle interviews coding interview problem and common interview question focused on arrays and constraints.