Available question text
Given an even-length array and allowed values 0..k, find the minimum number of element replacements so that every mirrored pair satisfies |a[i] - a[n-1-i]| = X for the same X. The core challenge is to aggregate per-pair costs (0/1/2 changes) across all candidate X efficiently and pick the X that minimizes the total changes.
Related questions
Continue with questions that share topics or the same question type.
Sources · 1 reference
These records explain where the question appears. A company tag or candidate report does not guarantee a future interview question.
Hello Interview · 1 record
No company association
Leetcode 3224. Minimum Array Changes to Make Differences Equal
Reported date not specified · 0 source reports
Source snapshot: Nov 12, 2026
View source