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index.html
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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<style>
body{
text-align:center;
}
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
-webkit-appearance: none;
margin: 0;
}
/* Firefox */
input[type=number] {
-moz-appearance: textfield;
}
#sudoko {
display: flex;
margin-left:30%;
}
.unsolved {
border: 2px solid black;
width: 300px;
height: 300px;
display: grid;
grid-template-columns: repeat(1, 1fr);
border-radius: 5px;
}
.solved {
border: 2px solid green;
width: 300px;
height: 300px;
margin-left: 5%;
display: grid;
grid-template-columns: repeat(1, 1fr);
}
.Vholder {
box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
display: grid;
grid-template-columns: repeat(9, 1fr);
}
.values {
box-shadow: rgba(0, 0, 0, 0.35) 0px 5px 15px;
width: 72%;
height: 72%;
font-size: 20px;
text-align: center;
font-family: sans-serif;
font-weight: bold;
color: black;
border-radius: 5px;
}
.values:hover {
border: 3px solid black;
background-color: rgb(0, 255, 247) !important;
}
.solveBtn {
border: 2px solid black;
display: block;
padding: 2px 40px;
margin: auto;
margin-top: 3%;
width: 50px;
text-align: center;
background-color: rgb(40, 5, 5);
color: white;
font-size: 20px;
font-family: sans-serif;
border-radius: 8px;
}
#wrong {
color: red;
font-size: 20px;
font-family: sans-serif;
font-weight: bold;
}
</style>
</head>
<body>
<h1>Sudoko Solver</h1>
<p>Now you can create or solve any sudoko set.</p>
<div id="sudoko"></div>
<p id="wrong"></p>
<p id="nmsg"> <span id="name"></span></p>
</body>
</html>
<script>
let stack = [];
let sudoko = document.querySelector("#sudoko")
let div = document.createElement("div")
div.className = "unsolved"
let div1 = document.createElement("div")
div1.className = "solved"
sudoko.append(div, div1)
let sudokoMatrix = []
for (let i = 0; i < 9; i++) {
let arr = new Array(9).fill(0);
sudokoMatrix.push(arr)
}
for (let i = 0; i < 9; i++) {
let innerBox = document.createElement("div")
innerBox.className = "Vholder";
for (let j = 0; j < 9; j++) {
let values = document.createElement("input")
if ((i < 3 && j >= 3 && j < 6) || (i >= 3 && j < 3 && i < 6)
|| (i >= 3 && j >= 6 && i < 6) || (i >= 6 && j >= 3 && j < 6)) {
values.style.backgroundColor = "#C0C0C0";
}
values.className = "values"
values.setAttribute("type", "Number");
values.addEventListener("input", function () {
if (check(i, j, sudokoMatrix, values.value) == true) {
sudokoMatrix[i][j] = values.value;
stack.push([values, [i, j]]);
values.disabled = true;
} else {
values.style.backgroundColor = "red"
let wrong = document.querySelector("#wrong")
wrong.innerText = "Enter correct number it might be repeating!"
values.disabled = true;
setTimeout(function () {
values.style.backgroundColor = null;
wrong.innerText = ""
values.disabled = false;
}, 2000)
values.value = "";
}
})
innerBox.append(values);
}
div.append(innerBox)
}
let back = document.createElement("div")
back.innerText = "Solve"
back.className = "solveBtn"
document.body.append(back)
back.addEventListener("click", function () {
back.innerText = "Solving"
sudokoSolver(sudokoMatrix, 0, 0)
})
let back1 = document.createElement("div")
back1.innerText = "Back"
back1.className = "solveBtn"
document.body.append(back1)
back1.addEventListener("click", function () {
if (stack.length != 0) {
let last = stack[stack.length - 1]
last[0].disabled = false;
last[0].value = "";
let i = last[1][0];
let j = last[1][1];
sudokoMatrix[i][j] = 0;
stack.pop();
console.log(sudokoMatrix)
}
})
function sudokoSolver(board, row, col) {
if (row == board.length) {
displaySolved(board, div1)
return false;
}
let next_row = 0;
let next_col = 0;
if (col == board.length - 1) {
next_row = row + 1;
next_col = 0;
} else {
next_row = row;
next_col = col + 1;
}
if (board[row][col] != 0) {
sudokoSolver(board, next_row, next_col)
} else {
for (let i = 1; i <= 9; i++) {
if (check(row, col, board, i) == true) {
board[row][col] = i;
let chSudoko = sudokoSolver(board, next_row, next_col)
if (chSudoko == false) {
return false
}
board[row][col] = 0
}
}
}
}
function displaySolved(sudokoMatrix1, div1) {
div1.innerHTML = ""
for (let i = 0; i < 9; i++) {
let innerBox = document.createElement("div")
innerBox.className = "Vholder";
for (let j = 0; j < 9; j++) {
let values = document.createElement("input")
values.className = "values"
if ((i < 3 && j >= 3 && j < 6) || (i >= 3 && j < 3 && i < 6)
|| (i >= 3 && j >= 6 && i < 6) || (i >= 6 && j >= 3 && j < 6)) {
values.style.backgroundColor = "#C0C0C0";
}
values.value = sudokoMatrix1[i][j]
values.disabled = true;
innerBox.append(values);
}
div1.append(innerBox)
}
back.innerText = "Solved"
}
function check(i, j, board, num) {
for (let k = 0; k < 9; k++) {
if (board[i][k] == num && k != j) {
return false;
} else if (board[k][j] == num && k != i) {
return false
}
}
let iS, iE, jS, jE;
if (i < 3) {
iS = 0;
iE = 3;
} else if (i < 6) {
iS = 3;
iE = 6;
} else {
iS = 6;
iE = 9;
}
if (j < 3) {
jS = 0;
jE = 3;
} else if (j < 6) {
jS = 3;
jE = 6;
} else {
jS = 6;
jE = 9;
}
for (let k = iS; k < iE; k++) {
for (let l = jS; l < jE; l++) {
if (board[k][l] == num && k != i && l != j) {
return false
}
}
}
return true;
}
</script>