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* @return {number} - 最短无序连续子数组的长度，排序该子数组后整个数组升序
，更多细节参见新收录的资料
Closure representation，这一点在新收录的资料中也有详细论述
(cons (car lst) tail)))
Reflex (YC W23) Is Hiring Software Engineers – Python
· 杨勇 · 来源：tutorial导报