极客教程使用JavaScript的Gnome排序可视化器
在本文中，我们将学习使用javascript实现Gnome排序可视化器，Gnome排序也称为愚蠢排序，它基于一个花园小侏儒排序他的花盆的概念。要了解更多，请参考Gnome排序。
像Gnome排序这样的算法可以通过可视化而不是冗长的代码来轻松理解。在本文中，使用HTML、CSS和JavaScript实现了Gnome排序可视化器。
先决条件:
- Gnome排序。
- 基本的HTML、CSS和JavaScript。
- JavaScript的promises。
- JavaScript的async/await函数。
方法:
- 按钮“生成新数组”使用Math.random()函数生成一个随机值的数组，并在高度方面对应一个条形图。
- 使用不同的颜色表示未排序的元素(天蓝色)，比较的元素(深蓝色和红色)和已排序的元素(浅绿色)。
按钮“Gnome排序”使用Gnome排序算法来对元素进行排序。
最后，元素被排序。
示例: 在这个示例中，我们使用上述解释的方法。
HTML
<!--Filename: index.html -->
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width,
initial-scale=1.0" />
<meta http-equiv="X-UA-Compatible" content="ie=edge" />
<!-- Title -->
<title>Gnome Sort Visualizer</title>
<!-- Linking style.css -->
<link href="style.css" rel="stylesheet" />
</head>
<body>
<section class="head">Gnome Sort Visualizer</section>
<section class="data-container"></section>
<section id="ele"></section>
<div style="margin: auto; width: fit-content">
<!-- "Generate New Array" button -->
<button class="btn1"
onclick="generate()"
id="Button1">
Generate New Array
</button>
<!-- "Gnome Sort" button -->
<button class="btn2"
onclick="CombSort(),disable()"
id="Button2">
Gnome Sort
</button>
</div>
<script src="script.js"></script>
</body>
</html>
文件名: style.css
CSS
/* filename: style.css */
.mySlides {
display: none;
}
body {
background-color: rgb(255, 235, 211);
font-family: Verdana, sans-serif;
}
.head {
margin-top: 20px;
margin-right: 20vw;
margin-left: 20vw;
text-align: center;
font-size: 30px;
background-color: #6f459e;
color: white;
border-radius: 19px;
font-weight: bolder;
}
.data-container {
width: 600px;
height: 364px;
position: relative;
margin: 0 auto;
}
.bar {
width: 28px;
position: absolute;
left: 0;
bottom: 0;
background-color: rgb(0, 183, 255);
transition: 0.2s all ease;
}
.bar__id {
position: absolute;
top: -24px;
width: 100%;
text-align: center;
}
.btn1 {
padding: 12px;
font-weight: bolder;
background-color: #6f459e;
border-radius: 10px;
color: white;
font-size: 16px;
border: white;
margin-top: 1vw;
margin-right: 1vw;
}
.btn2 {
padding: 12px;
font-weight: bolder;
background-color: #6f459e;
border-radius: 10px;
color: white;
font-size: 16px;
border: white;
}
#ele {
text-align: center;
height: 35px;
}
文件名: script.js
Javascript
// script.js File
const container = document.querySelector(".data-container");
// Function to generate bars
function generatebars(num = 20) {
// For loop to generate 20 bars
for (let i = 0; i < num; i += 1) {
// To generate random values from 1 to 100
const value = Math.floor(Math.random() * 100) + 1;
// To create element "div"
const bar = document.createElement("div");
// To add class "bar" to "div"
bar.classList.add("bar");
// Provide height to the bar
bar.style.height = `{value * 3}px`;
// Translate the bar towards positive X axis
bar.style.transform = `translateX({i * 30}px)`;
// To create element "label"
const barLabel = document.createElement("label");
// To add class "bar_id" to "label"
barLabel.classList.add("bar__id");
// Assign value to "label"
barLabel.innerHTML = value;
// Append "Label" to "div"
bar.appendChild(barLabel);
// Append "div" to "data-container div"
container.appendChild(bar);
}
}
// Asynchronous function to perform "Gnome Sort"
async function CombSort(delay = 600) {
let bars = document.querySelectorAll(".bar");
let pos = 0;
while (pos < 20) {
if (pos == 0) {
pos++;
}
// Assigning value of posth bar into value1
let value1 = parseInt(bars[pos].childNodes[0].innerHTML);
// Assigning value of pos-1th bar into value1
let value2 = parseInt(bars[pos - 1].childNodes[0].innerHTML);
// Comparing value1 and value2
if (value1 >= value2) {
pos++;
} else {
// Provide red color to the posth bar
bars[pos].style.backgroundColor = "red";
// Provide red color to the pos-1th bar
bars[pos - 1].style.backgroundColor = "red";
// Swap posth bar with (pos-1)th bar
let temp1 = bars[pos].style.height;
let temp2 = bars[pos].childNodes[0].innerText;
// To pause the execution of code for 300 milliseconds
await new Promise((resolve) =>
setTimeout(() => {
resolve();
}, 300)
);
// Swap posth bar with (pos-1)th bar
bars[pos].style.height = bars[pos - 1].style.height;
bars[pos].childNodes[0].innerText =
bars[pos - 1].childNodes[0].innerText;
bars[pos - 1].style.height = temp1;
bars[pos - 1].childNodes[0].innerText = temp2;
pos--;
}
// To pause the execution of code for 300 milliseconds
await new Promise((resolve) =>
setTimeout(() => {
resolve();
}, 300)
);
// Providing skyblue color
for (let x = 0; x < 20; x++) {
bars[x].style.backgroundColor = "rgb(0, 183, 255)";
}
}
// Providing lightgreen color
for (let x = 0; x < 20; x++) {
bars[x].style.backgroundColor = "rgb(49, 226, 13)";
}
// To enable the button "Generate New Array" after final(sorted)
document.getElementById("Button1").disabled = false;
document.getElementById("Button1").style.backgroundColor = "#6f459e";
// To enable the button "Gnome Sort" after final(sorted)
document.getElementById("Button2").disabled = false;
document.getElementById("Button2").style.backgroundColor = "#6f459e";
}
// Call "generatebars()" function
generatebars();
// Function to generate new random array
function generate() {
window.location.reload();
}
// Function to disable the button
function disable() {
// To disable the button "Generate New Array"
document.getElementById("Button1").disabled = true;
document.getElementById("Button1").style.backgroundColor = "#d8b6ff";
// To disable the button "Gnome Sort"
document.getElementById("Button2").disabled = true;
document.getElementById("Button2").style.backgroundColor = "#d8b6ff";
}
输出：
