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Quick Summary
Find the minimum sequence of rotate or flip operations to sort an integer array.
Each step applies a fixed transformation, and operations can be chained in any order.
Return -1 if the sorted arrangement is unreachable through the allowed moves.
What This Tests
Modeling discrete state transformations as a graph
Shortest-path exploration on unweighted state spaces
Tracking visited configurations to prevent cycles and redundant work
Understanding how constraint bounds affect algorithmic feasibility
Common Patterns
DFS/BFS
Graph Traversal
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arr =
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