reverse_iterator: 反向迭代器 A copy of the original iterator (the base iterator) is kept internally and used to reflect the operations performed on the reverse_iterator: whenever the reverse_iterator is in
问题描述: Implement an iterator over a binary search tree (BST). Your iterator will be initialized with the root node of a BST. Calling next() will return the next smallest number in the BST. Note
问题描述: Given a nested list of integers, implement an iterator to flatten it. Each element is either an integer, or a list -- whose elements may also be integers or other lists. 示例: Given the li
主要为了解释这段代码: impl Condition {/// Returns an iterator over only the variable tests, along with/// their indices./// 这个语法的解释可以参考这里 https://blog.katona.me/2019/12/29/Rust-Lifetimes-and-Iterators/fn varia