Array|数组

Array|数组

定义 把数据码成一排进行存放 In Java, all data must be of the same type In Python, we can store different data types Index, usually start from 0 (R starts from 1) 数组支持for, forEach因为它具有可迭代,可遍历的能力 (iterable) 二次封装属于

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