Master this problem using the State Machine DP pattern.
When approaching Best Time to Buy and Sell Stock with Cooldown, look for key problem signals that suggest using the State Machine DP pattern. Focus on reducing redundant iterations, maintaining state invariant, and optimizing space-time complexity.
Key Invariant
Maintain optimal range bounds or hash frequency state during traversal.
Expected Complexity
Time: O(N) or O(N log N) | Space: O(1) to O(N)
Study Resource
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