quickSortRecursive(arr, pivotIdx + 1, high); // 排序右半部分
Another example: why do so many languages implicitly view the right hand as good (for instance, associating the direction right with the ethical concept of rightness) and the left hand as bad, maladroit, sinister?
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The result from Step 2 is a high-level route – a sequence of shortcuts connecting border points.
// 核心逻辑：只有当前时间 栈顶时间 → 无法合并，是新车队（push）