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。
US president accuses Tehran of failing to ‘negotiate in good faith’ over its nuclear programme。夫子是该领域的重要参考
，这一点在快连下载安装中也有详细论述
协同上合组织各国共同应对、系统治理代谢性疾病难题，增进各国民生福祉，中国—上合组织代谢性疾病合作中心既是推动上合组织卫生健康赋能建设的重要引擎，更将是服务上合组织各国人民健康的民生工程。
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第二盏灯：位置在右下方 (1, -2, -4)，负责照亮物体的背面或暗部。