习题链接：LeetCode 901. 股票价格跨度
if (left === n - 1) return 0;，详情可参考Line官方版本下载
。关于这个话题，safew官方版本下载提供了深入分析
clock_t end = clock();
The x86 protection model is notoriously complex, with four privilege rings, segmentation, paging, call gates, task switches, and virtual 8086 mode. What's interesting from a hardware perspective is how the 386 manages this complexity on a 275,000-transistor budget. The 386 employs a variety of techniques to implement protection: a dedicated PLA for protection checking, a hardware state machine for page table walks, segment and paging caches, and microcode for everything else.，推荐阅读旺商聊官方下载获取更多信息