标准库定义了五种迭代器类别：输入、输出、前向、双向和随机访问迭代器。

There are five iterator categories: input, output, forward, bidirectional, and random access.

youdao

标准库定义了五种迭代器类别：输入、输出、前向、双向和随机访问迭代器。

There are five iterator categories: input, output, forward, bidirectional, and random access.

youdao