// 1. 将当日价格存入数组，记录当前索引（i是当前价格在arr中的位置）
1. 找出最大值max和最小值min。爱思助手下载最新版本对此有专业解读
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Longer term, the bird's best chance for survival is to adapt to moult on shallow ice shelves. Fretwell has seen some groups begin to do this, although it may come with a cost to the penguins' breeding and feeding patterns.
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DENVER—The US Air Force's new Sentinel intercontinental ballistic missile is on track for its first test flight next year, military officials reaffirmed this week.