mirror of
https://github.com/krahets/hello-algo.git
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50 lines
1.6 KiB
Rust
50 lines
1.6 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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// 両端キューを初期化
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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!("両端キュー deque = ");
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print_util::print_queue(&deque);
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// 要素にアクセス
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let peek_first = deque.front().unwrap();
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print!("\n先頭要素 peekFirst = {peek_first}");
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let peek_last = deque.back().unwrap();
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print!("\n末尾要素 peekLast = {peek_last}");
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/* 要素をエンキュー */
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deque.push_back(4);
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print!("\n要素 4 を末尾に追加後 deque = ");
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print_util::print_queue(&deque);
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deque.push_front(1);
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print!("\n要素 1 を先頭に追加後 deque = ");
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print_util::print_queue(&deque);
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// 要素をデキュー
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let pop_last = deque.pop_back().unwrap();
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print!("\n末尾から取り出した要素 = {pop_last}、取り出し後 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先頭から取り出した要素 = {pop_first}、取り出し後 deque = ");
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print_util::print_queue(&deque);
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// 両端キューの長さを取得
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let size = deque.len();
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print!("\n両端キューの長さ size = {size}");
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// 両端キューが空かどうかを判定
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let is_empty = deque.is_empty();
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print!("\n両端キューが空かどうか = {is_empty}");
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}
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