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Summary Expected returns are positively related to the trading volume of undervalued stocks and negatively related to the trading volume of overvalued stocks. As a
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Range模块是跟踪数字范围的模块。设计一个数据结构来跟踪表示为半开半闭区间的范围并查询它们。 半开半闭区间 [left, right)表示所有 left <= x < right 的实数。 实现 RangeModule 类: RangeModule() 初始化数据结构的对象。 void addRange(int left, int right) 添加 半开区间 [left, right)，跟踪该区间中的每个实数。添加与当前跟踪的数字部分重叠的区间时，应当添加在区间 [left, right) 中尚未跟踪的任何数字到该区间中。 boolean queryRange(int