mirror of
https://github.com/krahets/hello-algo.git
synced 2024-12-26 02:26:28 +08:00
e720aa2d24
* Sync recent changes to the revised Word. * Revised the preface chapter * Revised the introduction chapter * Revised the computation complexity chapter * Revised the chapter data structure * Revised the chapter array and linked list * Revised the chapter stack and queue * Revised the chapter hashing * Revised the chapter tree * Revised the chapter heap * Revised the chapter graph * Revised the chapter searching * Reivised the sorting chapter * Revised the divide and conquer chapter * Revised the chapter backtacking * Revised the DP chapter * Revised the greedy chapter * Revised the appendix chapter * Revised the preface chapter doubly * Revised the figures
57 lines
1.3 KiB
JavaScript
57 lines
1.3 KiB
JavaScript
/**
|
|
* File: list.js
|
|
* Created Time: 2022-12-12
|
|
* Author: Justin (xiefahit@gmail.com)
|
|
*/
|
|
|
|
/* 初始化列表 */
|
|
const nums = [1, 3, 2, 5, 4];
|
|
console.log(`列表 nums = ${nums}`);
|
|
|
|
/* 访问元素 */
|
|
const num = nums[1];
|
|
console.log(`访问索引 1 处的元素，得到 num = ${num}`);
|
|
|
|
/* 更新元素 */
|
|
nums[1] = 0;
|
|
console.log(`将索引 1 处的元素更新为 0 ，得到 nums = ${nums}`);
|
|
|
|
/* 清空列表 */
|
|
nums.length = 0;
|
|
console.log(`清空列表后 nums = ${nums}`);
|
|
|
|
/* 在尾部添加元素 */
|
|
nums.push(1);
|
|
nums.push(3);
|
|
nums.push(2);
|
|
nums.push(5);
|
|
nums.push(4);
|
|
console.log(`添加元素后 nums = ${nums}`);
|
|
|
|
/* 在中间插入元素 */
|
|
nums.splice(3, 0, 6);
|
|
console.log(`在索引 3 处插入数字 6 ，得到 nums = ${nums}`);
|
|
|
|
/* 删除元素 */
|
|
nums.splice(3, 1);
|
|
console.log(`删除索引 3 处的元素，得到 nums = ${nums}`);
|
|
|
|
/* 通过索引遍历列表 */
|
|
let count = 0;
|
|
for (let i = 0; i < nums.length; i++) {
|
|
count += nums[i];
|
|
}
|
|
/* 直接遍历列表元素 */
|
|
count = 0;
|
|
for (const x of nums) {
|
|
count += x;
|
|
}
|
|
|
|
/* 拼接两个列表 */
|
|
const nums1 = [6, 8, 7, 10, 9];
|
|
nums.push(...nums1);
|
|
console.log(`将列表 nums1 拼接到 nums 之后，得到 nums = ${nums}`);
|
|
|
|
/* 排序列表 */
|
|
nums.sort((a, b) => a - b);
|
|
console.log(`排序列表后 nums = ${nums}`);
|