Learn how to count inversions in an array using two approaches: nested loops for O(n²) complexity and merge sort for O(n*log n) efficiency. Understand inversion counts, examples, and detailed explanations. Includes Java programs for both naive and merge sort methods. Explore optimized solutions for finding inversions. Suitable for understanding array sorting and inversion concepts.
For more details, visit the GeeksforGeeks article: Count Inversions of an Array.