描述：找出一个连续子数组，若对该子数组升序排序，则整个数组变为升序。返回符合题意的最短子数组长度。
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。关于这个话题，爱思助手下载最新版本提供了深入分析
The California Fast Food Workers Union, an affiliate of the Service Employees International Union, drafted a Constitutional Pledge to California Workers’ Rights for workplaces to sign that affirms a commitment to protecting workers and “keep ICE from going where they are not allowed”.
Single-character pairs only. Multi-character confusables (rn vs m, cl vs d) are outside scope. These are a known gap in confusables.txt itself.