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50 lines
1.5 KiB
50 lines
1.5 KiB
/*
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* File: deque.rs
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* Created Time: 2023-02-05
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* Author: codingonion (coderonion@gmail.com), xBLACKICEx (xBLACKICEx@outlook.com)
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*/
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use hello_algo_rust::include::print_util;
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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(3);
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deque.push_back(2);
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deque.push_back(5);
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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();
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print!("\n队首元素 peekFirst = {peek_first}");
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let peek_last = deque.back().unwrap();
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print!("\n队尾元素 peekLast = {peek_last}");
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/* 元素入队 */
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deque.push_back(4);
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print!("\n元素 4 队尾入队后 deque = ");
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print_util::print_queue(&deque);
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deque.push_front(1);
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print!("\n元素 1 队首入队后 deque = ");
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print_util::print_queue(&deque);
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// 元素出队
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let pop_last = deque.pop_back().unwrap();
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print!("\n队尾出队元素 = {pop_last}，队尾出队后 deque = ");
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print_util::print_queue(&deque);
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let pop_first = deque.pop_front().unwrap();
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print!("\n队首出队元素 = {pop_first}，队首出队后 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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}
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