使用 JavaScript 的鸡尾酒排序可视化工具

鸡尾酒排序是冒泡排序的一种变体。鸡尾酒排序在两个方向交替遍历给定数组。为了更多地了解它。请参阅鸡尾酒排序。

像鸡尾酒排序这样的算法可以通过可视化而不是长代码来轻松理解。在本文中， Cocktail Sort Visualizer是使用HTML、CSS和JavaScript 实现的。

先决条件：

• 鸡尾酒排序。
• 基本的 HTML、CSS 和 JavaScript。
• JavaScript 承诺。
• JavaScript 异步/等待函数。

方法：

• 按钮Generate New Array使用Math.random()函数生成一个随机值数组，并在高度方面与该值对应的条形。
• 不同的颜色用于指示哪些元素未排序（天蓝色）、比较（红色）和已排序（浅绿色）。
• Button Cocktail使用选择排序算法对元素进行排序。
• 最后，对元素进行排序。

示例：点击“Generate New Array”按钮生成一个新的随机数组。单击“鸡尾酒排序”按钮执行可视化。

HTML

  
  
    
    
    
  
    
    Cocktail Sort Visualizer
  
    
    
  
  
  
    Cocktail Sort
    
    
    
  
      
      
        Generate New Array
      
  
      
      
        Cocktail Sort
      
    
  
  
  
  

样式文件

.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;
}

脚本.js

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 "Cocktail Sort"
async function CocktailSort(delay = 600) {
  let bars = document.querySelectorAll(".bar");
  
  // Initialize swapped with true
  let swapped = true;
  
  // Initialize s with zero
  let s = 0;
  
  // Initialize e with 20
  let e = 20;
  
  while (swapped == true) {
    swapped = false;
  
    for (var i = s; i < e - 1; i++) {
      
      // Assigning value of ith bar into value1
      var value1 = parseInt(bars[i].childNodes[0].innerHTML);
  
      // Assigning value of i+1th bar into value2
      var value2 = parseInt(bars[i + 1].childNodes[0].innerHTML);
  
      // To pause the execution of code for 300 milliseconds
      await new Promise((resolve) =>
        setTimeout(() => {
          resolve();
        }, 300)
      );
  
      // Provide red color to the ith bar
      bars[i].style.backgroundColor = "red";
  
      // Provide red color to the i+1th bar
      bars[i + 1].style.backgroundColor = "red";
      if (value1 > value2) {
        var temp1 = bars[i].style.height;
        var temp2 = bars[i].childNodes[0].innerText;
  
        // To pause the execution of code for 300 milliseconds
        await new Promise((resolve) =>
          setTimeout(() => {
            resolve();
          }, 300)
        );
  
        // Swap ith bar with (i+1)th bar
        bars[i].style.height = bars[i + 1].style.height;
        bars[i].childNodes[0].innerText = bars[i + 1].childNodes[0].innerText;
        bars[i + 1].style.height = temp1;
        bars[i + 1].childNodes[0].innerText = temp2;
  
        // Set swapped
        swapped = true;
      }
        
      // To pause the execution of code for 300 milliseconds
      await new Promise((resolve) =>
        setTimeout(() => {
          resolve();
        }, 300)
      );
        
      // Provide skyblue color to the ith bar
      bars[i].style.backgroundColor = "rgb(0, 183, 255)";
  
      // Provide skyblue color to the i+1th bar
      bars[i + 1].style.backgroundColor = "rgb(0, 183, 255)";
    }
  
    if (swapped == false) {
      break;
    }
  
    // Set swapped false
    swapped = false;
  
    e = e - 1;
  
    for (var i = e - 1; i >= s; i--) {
      
      // Assigning value of ith bar into value1
      var value1 = parseInt(bars[i].childNodes[0].innerHTML);
  
      // Assigning value of i+1th bar into value2
      var value2 = parseInt(bars[i + 1].childNodes[0].innerHTML);
  
      // To pause the execution of code for 300 milliseconds
      await new Promise((resolve) =>
        setTimeout(() => {
          resolve();
        }, 300)
      );
  
      // Provide red color to the ith bar
      bars[i].style.backgroundColor = "red";
  
      // Provide red color to the i+1th bar
      bars[i + 1].style.backgroundColor = "red";
      if (value1 > value2) {
        var temp1 = bars[i].style.height;
        var temp2 = bars[i].childNodes[0].innerText;
  
        // To pause the execution of code for 300 milliseconds
        await new Promise((resolve) =>
          setTimeout(() => {
            resolve();
          }, 300)
        );
  
        // Swap ith bar with (i+1)th bar
        bars[i].style.height = bars[i + 1].style.height;
        bars[i].childNodes[0].innerText = bars[i + 1].childNodes[0].innerText;
        bars[i + 1].style.height = temp1;
        bars[i + 1].childNodes[0].innerText = temp2;
  
        // Set swapped
        swapped = true;
      }
        
      // To pause the execution of code for 300 milliseconds
      await new Promise((resolve) =>
        setTimeout(() => {
          resolve();
        }, 300)
      );
        
      //Provide skyblue color to the ith bar
      bars[i].style.backgroundColor = "rgb(0, 183, 255)";
  
      // Provide skyblue color to the i+1th bar
      bars[i + 1].style.backgroundColor = "rgb(0, 183, 255)";
    }
    s = s + 1;
  }
  
  for (var 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 "Cocktail 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 "Cocktail Sort"
  document.getElementById("Button2").disabled = true;
  document.getElementById("Button2").style.backgroundColor = "#d8b6ff";
}

输出：