（三）案件情况疑难复杂、涉及多个法律关系的。
优化：随机选基准避免最坏情况 O(n²)
。关于这个话题，51吃瓜提供了深入分析
Does new science get us closer to finding out how life on earth began?BBC Inside Science
Browser benchmarks (Chrome/Blink, averaged over 3 runs) show consistent gains as well:
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