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67 lines
1.7 KiB
Rust
67 lines
1.7 KiB
Rust
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/**
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* File: array.rs
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* Created Time: 2023-01-18
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* Author: xBLACICEx (xBLACKICEx@outlook.com)
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*/
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#[allow(unused_variables)]
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/* Driver Code */
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fn main() {
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/* 初始化列表 */
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let mut list: Vec<i32> = vec![1, 3, 2, 5, 4];
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println!("列表 list = {:?}", list);
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/* 访问元素 */
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let num = list[1];
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println!("访问索引 1 处的元素,得到 num = {num}");
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/* 更新元素 */
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list[1] = 0;
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println!("将索引 1 处的元素更新为 0 ,得到 list = {:?}", list);
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/* 清空列表 */
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list.clear();
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println!("清空列表后 list = {:?}", list);
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/* 尾部添加元素 */
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list.push(1);
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list.push(3);
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list.push(2);
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list.push(5);
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list.push(4);
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println!("添加元素后 list = {:?}", list);
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/* 中间插入元素 */
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list.insert(3, 6);
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println!("在索引 3 处插入数字 6 ,得到 list = {:?}", list);
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/* 删除元素 */
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list.remove(3);
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println!("删除索引 3 处的元素,得到 list = {:?}", list);
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/* 通过索引遍历列表 */
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let mut count = 0;
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for _ in 0..list.len() {
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count += 1;
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}
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/* 直接遍历列表元素 */
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count = 0;
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for _ in &list {
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count += 1;
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} // 或者
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// list.iter().for_each(|_| count += 1);
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// let count = list.iter().fold(0, |count, _| count + 1);
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/* 拼接两个列表 */
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let mut list1 = vec![6, 8, 7, 10, 9];
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list.append(&mut list1); // append(移动) 之后 list1 为空!
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// list.extend(&list1); // extend(借用) list1 能继续使用
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println!("将列表 list1 拼接到 list 之后,得到 list = {:?}", list);
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/* 排序列表 */
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list.sort();
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println!("排序列表后 list = {:?}", list);
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}
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