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<!DOCTYPE html>
<html>
<head>
<title>Sorting Algorithms Visualization</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<style>
body {
font-family: Arial, sans-serif;
background-color: #f4f4f4;
margin: 0;
padding: 0;
}
#buttons {
margin: 20px;
text-align: center;
}
input, button, select {
margin: 5px;
padding: 10px;
font-size: 16px;
border-radius: 5px;
border: 1px solid #ccc;
outline: none;
}
button {
cursor: pointer;
transition: background-color 0.3s ease;
}
button:hover {
background-color: #ddd;
}
.btn-primary {
background-color: #007bff;
color: white;
border: none;
}
.btn-primary:hover {
background-color: #0056b3;
}
.btn-danger {
background-color: #dc3545;
color: white;
border: none;
}
.btn-danger:hover {
background-color: #bd2130;
}
.header {
background-color: #333;
color: white;
padding: 20px 0;
text-align: center;
}
.sh {
display: flex;
justify-content: center;
align-items: flex-end;
height: 400px;
margin-top: 20px;
width: 90%;
margin-left: auto;
margin-right: auto;
position: relative;
}
#heading {
text-align: center;
margin-top: 20px;
color: #333;
font-size: 36px;
font-weight: bold;
}
.bar-container {
position: absolute;
display: flex;
flex-direction: column;
align-items: center;
transition: left 0.5s ease-in-out;
}
.bar {
background-color: #3498db;
transition: background-color 0.5s ease-in-out, height 0.5s ease-in-out;
}
.bar-label {
margin-bottom: 5px;
font-weight: bold;
}
.comparing {
background-color: #e74c3c;
}
.sorted {
background-color: #2ecc71;
}
</style>
</head>
<body>
<div class="header">
<h1>Sorting Algorithms Visualization</h1>
</div>
<div id="contain">
<h2 id="heading">SORTING VISUALIZATION</h2>
<div class="sh" id="visualization"></div>
<div id="buttons">
<input id="array" type="text" placeholder="Enter array separated by space" size="30">
<button id="submit" class="btn-primary" onclick="submit()">Submit</button>
<select id="sortSelect">
<option value="bubble">Bubble Sort</option>
<option value="selection">Selection Sort</option>
<option value="insertion">Insertion Sort</option>
<option value="merge">Merge Sort</option>
<option value="heap">Heap Sort</option>
<option value="quick">Quick Sort</option>
</select>
<button class="btn-primary" onclick="startSort()">Start Sort</button>
<button class="btn-primary" onclick="stop = true">Stop</button>
<button class="btn-primary" onclick="stop = false; startSort()">Resume</button>
<button class="btn-primary" onclick="reset()">Reset</button>
<button class="btn-danger" onClick="window.location.reload();">Clear</button>
</div>
</div>
<script>
let array = [];
let stop = false;
const delay = ms => new Promise(res => setTimeout(res, ms));
const delayTime = 300;
function submit() {
const input = document.getElementById("array").value;
array = input.split(" ").map(Number);
visualizeArray(array);
}
function visualizeArray(arr) {
const container = document.getElementById("visualization");
container.innerHTML = "";
const maxVal = Math.max(...arr);
const containerWidth = container.offsetWidth;
const barWidth = Math.max(30, Math.min(100, containerWidth / arr.length - 2));
arr.forEach((val, idx) => {
const barContainer = document.createElement("div");
barContainer.className = "bar-container";
barContainer.style.width = `${barWidth}px`;
barContainer.style.left = `${idx * (barWidth + 2)}px`;
const label = document.createElement("div");
label.className = "bar-label";
label.textContent = val;
const bar = document.createElement("div");
bar.className = "bar";
bar.style.height = `${(val / maxVal) * 300}px`;
bar.style.width = `${barWidth}px`;
bar.id = `bar-${idx}`;
barContainer.appendChild(label);
barContainer.appendChild(bar);
container.appendChild(barContainer);
});
}
async function updateBars() {
const maxVal = Math.max(...array);
array.forEach((val, idx) => {
const container = document.getElementById(`bar-${idx}`).parentElement;
const label = container.querySelector('.bar-label');
const bar = container.querySelector('.bar');
label.textContent = val;
bar.style.height = `${(val / maxVal) * 300}px`;
});
await delay(delayTime);
}
async function swap(i, j) {
const temp = array[i];
array[i] = array[j];
array[j] = temp;
const container1 = document.getElementById(`bar-${i}`).parentElement;
const container2 = document.getElementById(`bar-${j}`).parentElement;
const tempLeft = container1.style.left;
container1.style.left = container2.style.left;
container2.style.left = tempLeft;
container1.querySelector('.bar').id = `bar-${j}`;
container2.querySelector('.bar').id = `bar-${i}`;
await updateBars();
}
async function bubbleSort() {
for (let i = 0; i < array.length; i++) {
for (let j = 0; j < array.length - i - 1; j++) {
if (stop) return;
document.getElementById(`bar-${j}`).classList.add("comparing");
document.getElementById(`bar-${j + 1}`).classList.add("comparing");
await delay(delayTime);
if (array[j] > array[j + 1]) {
await swap(j, j + 1);
}
document.getElementById(`bar-${j}`).classList.remove("comparing");
document.getElementById(`bar-${j + 1}`).classList.remove("comparing");
}
document.getElementById(`bar-${array.length - i - 1}`).classList.add("sorted");
}
}
async function selectionSort() {
for (let i = 0; i < array.length; i++) {
let minIdx = i;
document.getElementById(`bar-${i}`).classList.add("comparing");
for (let j = i + 1; j < array.length; j++) {
if (stop) return;
document.getElementById(`bar-${j}`).classList.add("comparing");
await delay(delayTime);
if (array[j] < array[minIdx]) {
minIdx = j;
}
document.getElementById(`bar-${j}`).classList.remove("comparing");
}
if (minIdx !== i) {
await swap(i, minIdx);
}
document.getElementById(`bar-${i}`).classList.remove("comparing");
document.getElementById(`bar-${i}`).classList.add("sorted");
}
}
async function insertionSort() {
for (let i = 1; i < array.length; i++) {
let j = i;
document.getElementById(`bar-${j}`).classList.add("comparing");
while (j > 0 && array[j - 1] > array[j]) {
if (stop) return;
await swap(j, j - 1);
j--;
await delay(delayTime);
}
document.getElementById(`bar-${j}`).classList.remove("comparing");
for (let k = 0; k <= i; k++) {
document.getElementById(`bar-${k}`).classList.add("sorted");
}
}
}
async function mergeSortWrapper() {
await mergeSort(0, array.length - 1);
}
async function mergeSort(left, right) {
if (left < right) {
const middle = Math.floor((left + right) / 2);
await mergeSort(left, middle);
await mergeSort(middle + 1, right);
await merge(left, middle, right);
}
}
async function merge(left, middle, right) {
const leftArray = array.slice(left, middle + 1);
const rightArray = array.slice(middle + 1, right + 1);
let i = 0, j = 0, k = left;
while (i < leftArray.length && j < rightArray.length) {
if (stop) return;
await highlightBars([left + i, middle + 1 + j], "comparing");
await delay(delayTime);
if (leftArray[i] <= rightArray[j]) {
array[k] = leftArray[i];
i++;
} else {
array[k] = rightArray[j];
j++;
}
await updateSingleBar(k);
k++;
}
while (i < leftArray.length) {
if (stop) return;
array[k] = leftArray[i];
await updateSingleBar(k);
i++;
k++;
}
while (j < rightArray.length) {
if (stop) return;
array[k] = rightArray[j];
await updateSingleBar(k);
j++;
k++;
}
for (let i = left; i <= right; i++) {
await highlightBars([i], "sorted");
}
}
async function heapSort() {
let n = array.length;
// Build heap (rearrange array)
for (let i = Math.floor(n / 2) - 1; i >= 0; i--)
await heapify(n, i);
// One by one extract an element from heap
for (let i = n - 1; i > 0; i--) {
if (stop) return;
// Move current root to end
await swap(0, i);
// call max heapify on the reduced heap
await heapify(i, 0);
document.getElementById(`bar-${i}`).classList.add("sorted");
}
document.getElementById(`bar-0`).classList.add("sorted");
}
async function heapify(n, i) {
let largest = i; // Initialize largest as root
let l = 2 * i + 1; // left = 2*i + 1
let r = 2 * i + 2; // right = 2*i + 2
// If left child is larger than root
if (l < n && array[l] > array[largest])
largest = l;
// If right child is larger than largest so far
if (r < n && array[r] > array[largest])
largest = r;
// If largest is not root
if (largest != i) {
await highlightBars([i, largest], "comparing");
await swap(i, largest);
// Recursively heapify the affected sub-tree
await heapify(n, largest);
}
}
async function quickSort(low = 0, high = array.length - 1) {
if (low < high) {
let pi = await partition(low, high);
await quickSort(low, pi - 1);
await quickSort(pi + 1, high);
}
if (low === 0 && high === array.length - 1) {
for (let i = 0; i < array.length; i++) {
document.getElementById(`bar-${i}`).classList.add("sorted");
}
}
}
async function partition(low, high) {
let pivot = array[high];
let i = low - 1;
for (let j = low; j <= high - 1; j++) {
if (stop) return;
await highlightBars([j, high], "comparing");
if (array[j] < pivot) {
i++;
await swap(i, j);
}
}
await swap(i + 1, high);
return i + 1;
}
async function highlightBars(indices, className) {
indices.forEach(index => {
document.getElementById(`bar-${index}`).classList.remove("comparing", "sorted");
if (className) {
document.getElementById(`bar-${index}`).classList.add(className);
}
});
await delay(delayTime);
}
async function updateSingleBar(index) {
const maxVal = Math.max(...array);
const container = document.getElementById(`bar-${index}`).parentElement;
const label = container.querySelector('.bar-label');
const bar = container.querySelector('.bar');
label.textContent = array[index];
bar.style.height = `${(array[index] / maxVal) * 300}px`;
await delay(delayTime);
}
function reset() {
stop = false;
visualizeArray(array);
}
async function startSort() {
reset();
const sortMethod = document.getElementById("sortSelect").value;
switch(sortMethod) {
case "bubble":
await bubbleSort();
break;
case "selection":
await selectionSort();
break;
case "insertion":
await insertionSort();
break;
case "merge":
await mergeSortWrapper();
break;
case "heap":
await heapSort();
break;
case "quick":
await quickSort();
break;
}
}
</script>
</body>
</html>