数组·结合·rolling·哈希 模式

识别信号

• Looking for subarrays matching a sequence of relative comparisons, not exact values.
• Hinting to consider pattern length and efficient checking, possibly via rolling hash.
• Tests the candidate's ability to transform arrays efficiently.

解题流程

1. 1. 明确窗口/状态定义
2. 2. 更新状态并维护约束
3. 3. 用边界样例验证

常见失分点

• Forgetting that subarray length is pattern length plus one, leading to index errors.
• Incorrectly transforming the array `nums` into `nums2` based on relative comparisons.