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49 lines
1.5 KiB
Rust
49 lines
1.5 KiB
Rust
/*
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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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// 初始化雙向佇列
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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!("雙向佇列 deque = ");
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print_util::print_queue(&deque);
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// 訪問元素
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let peek_first = deque.front().unwrap();
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print!("\n佇列首元素 peekFirst = {peek_first}");
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let peek_last = deque.back().unwrap();
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print!("\n佇列尾元素 peekLast = {peek_last}");
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/* 元素入列 */
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deque.push_back(4);
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print!("\n元素 4 佇列尾入列後 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 佇列首入列後 deque = ");
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print_util::print_queue(&deque);
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// 元素出列
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let pop_last = deque.pop_back().unwrap();
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print!("\n佇列尾出列元素 = {pop_last}，佇列尾出列後 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佇列首出列元素 = {pop_first}，佇列首出列後 deque = ");
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print_util::print_queue(&deque);
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// 獲取雙向佇列的長度
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let size = deque.len();
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print!("\n雙向佇列長度 size = {size}");
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// 判斷雙向佇列是否為空
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let is_empty = deque.is_empty();
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print!("\n雙向佇列是否為空 = {is_empty}");
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}
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