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hello-algo/codes/rust/chapter_array_and_linkedlist/list.rs

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