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44 lines
1.4 KiB
44 lines
1.4 KiB
/*
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* File: deque.rs
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* Created Time: 2023-02-05
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* Author: sjinzh (sjinzh@gmail.com), xBLACKICEx (xBLACKICEx@outlook.com)
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*/
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include!("../include/include.rs");
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use std::collections::VecDeque;
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/* Driver Code */
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pub fn main() {
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// 初始化双向队列
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let mut deque: VecDeque<i32> = VecDeque::new();
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deque.push_back(2); // 添加至队尾
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deque.push_back(5);
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deque.push_back(4);
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deque.push_front(3); // 添加至队首
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deque.push_front(1);
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print!("双向队列 deque = ");
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print_util::print_queue(&deque);
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// 访问元素
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let peek_first = deque.front().unwrap(); // 队首元素
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print!("\n队首元素 peekFirst = {peek_first}");
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let peek_last = deque.back().unwrap(); // 队尾元素
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print!("\n队尾元素 peekLast = {peek_last}");
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// 元素出队
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let pop_first = deque.pop_front().unwrap(); // 队首元素出队
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print!("\n队首出队元素 popFirst = {pop_first}，队首出队后 deque = ");
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print_util::print_queue(&deque);
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let pop_last = deque.pop_back().unwrap(); // 队尾元素出队
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print!("\n队尾出队元素 popLast = {pop_last}，队尾出队后 deque = ");
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print_util::print_queue(&deque);
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// 获取双向队列的长度
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let size = deque.len();
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print!("\n双向队列长度 size = {size}");
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// 判断双向队列是否为空
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let is_empty = deque.is_empty();
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print!("\n双向队列是否为空 = {is_empty}");
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} |