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script.js
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script.js
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var board;
var linearSearchButton;
var removeDuplicatesButton;
var bubbleSortButton;
var binarySearchButton;
var generateButton;
window.addEventListener("load", loadJavaScript, false);
var randomArray = [];
function loadJavaScript(){
board = document.getElementById("board");
let array = [1,2,3,4,5];
fillBoardWithBar(array, board);
generateButton = document.getElementById("bGenerate");
generateButton.addEventListener("click", generateBars);
linearSearchButton = document.getElementById("bLinearSearch");
linearSearchButton.addEventListener("click", linearSearch);
removeDuplicatesButton = document.getElementById("bRemoveDuplicates");
removeDuplicatesButton.addEventListener("click", removeDuplicates);
selectionSortButton = document.getElementById("bSelectionSort");
selectionSortButton.addEventListener("click", selectionSort);
bubbleSortButton = document.getElementById("bBubbleSort");
bubbleSortButton.addEventListener("click", bubbleSort);
binarySearchButton = document.getElementById("bBinarySearch");
binarySearchButton.addEventListener("click", binarySearch);
}
function fillBoardWithBar(someArray, board){
someArray.forEach((num) => {
let bar = document.createElement("div");
bar.className = "bar";
bar.id = `bar${num}`;
let numberNode = document.createTextNode(`${num}`);
bar.appendChild(numberNode);
let size = num*20;
if(size == 0) size = 10;
bar.style.height=`${size}px`;
board.appendChild(bar);
});
}
function generateBars(){
randomArray = [];
removeBars();
while(randomArray.length < 10)
randomArray.push(Math.floor(Math.random() * 16));
fillBoardWithBar(randomArray, board)
enableButtons();
document.getElementById("inputNumber").style.display = "block";
document.getElementById("foundIndex").innerHTML = "";
}
function enableButtons(){
linearSearchButton.disabled = false;
bRemoveDuplicates.disabled = false;
bubbleSortButton.disabled = false;
binarySearchButton.disabled = false;
selectionSortButton.disabled = false;
}
function linearSearch(){
if(document.getElementById("inputNumber").value){
let numberOfIterations = 0;
for(let i = 0; i<randomArray.length; i++){
numberOfIterations++;
if(randomArray[i] == document.getElementById("inputNumber").value){
setFoundText(i, numberOfIterations);
return;
}
}
document.getElementById("foundIndex").innerHTML = `Not Found. Number of iterations: ${numberOfIterations}. Θ(n) `;
} else {
document.getElementById("foundIndex").innerHTML = `Put a number`;
}
}
function binarySearch(){
let min = 0;
let max = randomArray.length-1;
let guess;
let found = -1;
let numberOfIterations = 0;
if(document.getElementById("inputNumber").value){
while(min <= max){
guess = Math.floor((min + max)/2);
numberOfIterations++;
if(randomArray[guess] == document.getElementById("inputNumber").value){
found = guess;
break;
} else {
if(randomArray[guess] < document.getElementById("inputNumber").value){
min = guess + 1;
} else {
max = guess -1;
}
}
if(numberOfIterations == 1000) break;
}
if(found == -1){
document.getElementById("foundIndex").innerHTML = `Not found. Number of iterations: ${numberOfIterations}. <b>Only works after sorted.</b>`;
}
if(randomArray[guess] == document.getElementById("inputNumber").value){
setFoundText(guess, numberOfIterations);
return;
}
} else {
document.getElementById("foundIndex").innerHTML = `Put a number`;
}
}
function setFoundText(i, numberOfIterations){
document.getElementById("foundIndex").innerHTML = `Found at ${i}. Number of iterations: ${numberOfIterations}`;
document.getElementById(`bar${document.getElementById("inputNumber").value}`).style.backgroundColor = `rgb(78, 28, 28)`;
}
function removeDuplicates(){
let removedCount = 0;
removeBars();
for (let i = 0; i < randomArray.length; i++) {
for(let k = i+1; k < randomArray.length; k++){
if(randomArray[i] == randomArray[k]){
removedCount++;
randomArray.splice(k,1);
}
}
}
fillBoardWithBar(randomArray, board);
document.getElementById("foundIndex").innerHTML = "Number of bars removed: " + removedCount;
}
function selectionSort(){
let iterations = 0;
let valuesChanges = 0;
let indexOfMinimum = 0;
for(let i = 0; i < randomArray.length-1; i++){
indexOfMinimum = i;
for(let j = i+1; j < randomArray.length; j++){
if(randomArray[j] < randomArray[indexOfMinimum]){
indexOfMinimum = j;
valuesChanges++;
}
iterations++;
}
swap(indexOfMinimum, i);
}
removeBars();
document.getElementById("foundIndex").innerHTML = "Times iterated to sort: " + iterations + ". Numbers changed: " + valuesChanges;
fillBoardWithBar(randomArray, board);
}
function swap(source, destination){
let temp = randomArray[source];
randomArray[source] = randomArray[destination];
randomArray[destination] = temp;
}
function bubbleSort(){
let iterations = 0;
let valuesChanges = 0;
for (let i = 0; i < randomArray.length; i++) {
for (let j = 0; j < randomArray.length; j++) {
if(randomArray[i] < randomArray[j]){
swap(j, i);
valuesChanges++;
}
iterations++;
}
}
removeBars();
document.getElementById("foundIndex").innerHTML = "Times iterated to sort: " + iterations + ". Numbers changed: " + valuesChanges;
fillBoardWithBar(randomArray, board);
}
function removeBars(){
while(board.hasChildNodes()){
board.removeChild(board.lastChild);
}
}