├── README.md ├── apps ├── css │ └── bootstrap.min.css ├── images │ └── logo.png └── js │ ├── app.js │ ├── controllers.js │ ├── data.js │ ├── filters.js │ └── libs │ ├── angular.min.js │ ├── bootstrap.min.js │ └── jquery-1.11.3.min.js └── index.html /README.md: -------------------------------------------------------------------------------- 1 | angular_sudoku 2 | ============== 3 | 4 | Sudoku game built with angular.js 5 | 6 | The algorithm for solving the grid: 7 | 8 | 1. updates cell possibilities. 9 | 2. fill cells with unique values. 10 | 3. if grid updated, go back to (1.) else go to (4.) 11 | 4. backtrack algorithm (does not try the possibilities one by one, instead randomly choose possibilities). 12 | 13 | Check out this live example http://mourafiq.com/angular_sudoku/ 14 | -------------------------------------------------------------------------------- /apps/images/logo.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/mmourafiq/angular_sudoku/7950bbacc5a88fafeeb329c9771b3624e5140e82/apps/images/logo.png -------------------------------------------------------------------------------- /apps/js/app.js: -------------------------------------------------------------------------------- 1 | var Sudoku = angular.module('Sudoku', [],function ($interpolateProvider) { 2 | $interpolateProvider.startSymbol('{[{'); 3 | $interpolateProvider.endSymbol('}]}'); } 4 | ); -------------------------------------------------------------------------------- /apps/js/controllers.js: -------------------------------------------------------------------------------- 1 | Sudoku.controller('SudokuController', function SudokuController($scope, data) { 2 | 'use strict'; 3 | 4 | $scope.rows = angular.copy(data); 5 | $scope.rows_save = angular.copy(data); 6 | $scope.current_possibilities = []; 7 | 8 | /** 9 | * Creates an empty grid. 10 | */ 11 | function createEmptyRows() { 12 | var rows = angular.copy(data); 13 | for (var l=0; l<9; l++) 14 | for(var c=0; c<9; c++){ 15 | rows[l].columns[c].value = ""; 16 | rows[l].columns[c].class = ""; 17 | } 18 | return rows; 19 | } 20 | 21 | /** 22 | * Checks if the current grid is solved. 23 | */ 24 | function isSolved(rows) 25 | { 26 | for(var i = 0; i < 9; i++) 27 | for(var k=0; k<9; k++) 28 | if(rows[i].columns[k].value === "") 29 | return false; 30 | return true; 31 | } 32 | 33 | /** 34 | * Checks and changes the class of the current cell. 35 | */ 36 | function changeClass(old_class, new_class) { 37 | if (old_class === "correct") 38 | return old_class; 39 | else 40 | return new_class; 41 | } 42 | 43 | /** 44 | * Returns the max and min values of row/column based on coordinates. 45 | * 46 | * e.g. rowId = 5, columnId = 4 47 | * x x x | x x x | x x x 48 | * x x x | x x x | x x x 49 | * x x x | x x x | x x x 50 | * - - - - - - - - - 51 | * x x x | x x x | x x x 52 | * x x x | x x x | x x x 53 | * x x x | x 0 x | x x x 54 | * - - - - - - - - - 55 | * x x x | x x x | x x x 56 | * x x x | x x x | x x x 57 | * x x x | x x x | x x x 58 | * 59 | * returns {(3, 6), (3, 6)} 60 | */ 61 | function getCaseEdgesByCoords(rowId, columnId){ 62 | 63 | var _edges = function(id){ 64 | var rest = Math.floor(id/3); 65 | return {min: rest * 3, max: rest * 3 + 3}; 66 | }; 67 | 68 | return { 69 | row: _edges(rowId), 70 | column: _edges(columnId) 71 | }; 72 | } 73 | 74 | /** 75 | * Return the max and min values of row/column based on case id. 76 | * 77 | * e.g. caseId = 3 78 | * 79 | * X | X | X 80 | * - - - 81 | * O | X | X 82 | * - - - 83 | * X | X | X 84 | * 85 | * returns {(3, 6), (0, 3)} 86 | */ 87 | function getCaseEdgesById(caseId) { 88 | var rowMin = Math.floor(caseId/3) * 3; 89 | var columnMin = (caseId % 3) * 3; 90 | return { 91 | row: { 92 | min: rowMin, 93 | max: rowMin + 3 94 | }, 95 | column: { 96 | min: columnMin, 97 | max: columnMin + 3 98 | } 99 | }; 100 | } 101 | 102 | function removePossibilities(possibilities, indices) { 103 | for (var i = 0; i < indices.length; i++){ 104 | var j = (i == 0) ? indices[i] : indices[i]-i; 105 | possibilities.splice(j,1); 106 | } 107 | } 108 | 109 | /** 110 | * Returns the possibilities for a cell. 111 | */ 112 | function getPossibilities(rows, rowId, columnId){ 113 | var pos = [1,2,3,4,5,6,7,8,9]; 114 | 115 | linePossibilities(rows, 'row', rowId, pos); 116 | linePossibilities(rows, 'column', columnId, pos); 117 | 118 | var caseEdges = getCaseEdgesByCoords(rowId, columnId); 119 | casePossibilities(rows, caseEdges, pos); 120 | 121 | return pos; 122 | } 123 | 124 | /** 125 | * Returns possibilities of a cell, based on a vertical/horizontal line. 126 | */ 127 | function linePossibilities(rows, direction, id, pos){ 128 | pos = (typeof pos === 'undefined') ? [1,2,3,4,5,6,7,8,9] : pos; 129 | var indices = []; 130 | 131 | for(var i = 0; i < pos.length; i++){ 132 | for(var j = 0; j < 9; j++){ 133 | var positionValue; 134 | 135 | if (direction === 'row') 136 | positionValue = rows[id].columns[j].value; 137 | if (direction === 'column') 138 | positionValue = rows[j].columns[id].value; 139 | 140 | if (pos[i] == positionValue){ 141 | indices.push(i); 142 | j = 9; 143 | } 144 | } 145 | } 146 | 147 | removePossibilities(pos, indices); 148 | 149 | return pos; 150 | } 151 | 152 | /** 153 | * Returns the possibilities based on a case. 154 | */ 155 | function casePossibilities(rows, edges, pos){ 156 | pos = (typeof pos === 'undefined') ? [1,2,3,4,5,6,7,8,9] : pos; 157 | var indices = []; 158 | for(var p=0; p<9; p++) 159 | for(var j = edges.row.min; j < edges.row.max; j++) 160 | for(var k = edges.column.min; k < edges.column.max; k++) 161 | { 162 | if (pos[p] == rows[j].columns[k].value){ 163 | indices.push(p); 164 | j = 9; 165 | k=9; 166 | } 167 | } 168 | removePossibilities(pos, indices); 169 | return pos; 170 | } 171 | 172 | /** 173 | * Searches for cells with unique possibilities. 174 | * Return a tuple (state1, state2): 175 | * * state1: whether the grid is solvable or not. 176 | * * state2: whether it check for more cells with unique possibilities. 177 | */ 178 | function searchUniquePossibilities(rows){ 179 | var gridUpdated = false; 180 | 181 | var lineSearch = function(direction) { 182 | 183 | var _checkPerpondicularDirection = function(){ 184 | for(var j=0; j<9 && nbrCell<2; j++){ 185 | var cell = (direction === "row") ? rows[i].columns[j] : rows[j].columns[i]; 186 | if(cell.value == ""){ 187 | // we need to check if this value is a possibility for this cell 188 | for(var m=0; (m < cell.possibilities.length && cell.possibilities[m] != line_pos[p]); m++); 189 | if(cell.possibilities[m] == line_pos[p]){ 190 | nbrCell++; 191 | memCell = j; 192 | } 193 | } 194 | } 195 | }; 196 | 197 | for(var i=0; i<9; i++){ 198 | // for each cell of this line get possibilities. 199 | var line_pos = linePossibilities(rows, direction, i); 200 | 201 | for(var p=0; p0){ // try all possibilities 326 | var rows_clone = angular.copy(rows); 327 | var randomPossibility = Math.floor((Math.random() * 10) + 1) % nbr_pos; 328 | rows_clone[l].columns[c].value = rows_clone[l].columns[c].possibilities[randomPossibility]; 329 | var results = solveRows(rows_clone); // try t solve for this random possibility 330 | 331 | if(results['state']){ 332 | return {'state':true, 'rows': results['rows']}; 333 | } 334 | else{ 335 | // if the grid is not solved, remove this from possible values 336 | // of this cell and try again 337 | rows_clone[l].columns[c].possibilities.splice(randomPossibility,1); 338 | nbr_pos --; 339 | } 340 | } 341 | } 342 | 343 | // after exhausting all possibilities of all cells, the grid is not solvable. 344 | return {'state' :false, 'rows':''}; 345 | } 346 | 347 | $scope.getValue = function(value, rowId, columnId) { 348 | rowId -= 1; 349 | columnId -= 1; 350 | if ($scope.rows[rowId].columns[columnId].class == "correct") 351 | $scope.rows[rowId].columns[columnId].value = $scope.rows_save[rowId].columns[columnId].value; 352 | 353 | if (!(value >= 1 && value <= 9)){ 354 | return ""; 355 | } 356 | return value; 357 | }; 358 | 359 | $scope.init = function() { 360 | $scope.rows = jQuery.extend(true, [], $scope.rows_save); 361 | }; 362 | 363 | $scope.clear = function() { 364 | $scope.rows = createEmptyRows(); 365 | }; 366 | 367 | function genRandList(nbrRandom){ 368 | var randList = []; 369 | while(randList.length < nbrRandom){ 370 | var rand_i = Math.ceil(Math.random()*9) - 1; 371 | if (randList.indexOf(rand_i) === -1){ 372 | randList.push(rand_i); 373 | } 374 | } 375 | return randList; 376 | } 377 | 378 | /** 379 | * Generates a new grid. 380 | */ 381 | $scope.generate = function() { 382 | var rows = createEmptyRows(); 383 | var results = solveRows(rows); 384 | if(results['state']){ 385 | alert("creating new grid"); 386 | rows = angular.copy(results['rows']); 387 | for (var l=0; l<9; l++){ 388 | for(var c=0; c<9; c++){ 389 | rows[l].columns[c].class = "correct"; 390 | } 391 | } 392 | //first we generate a sequence of the lines [1,2, 3, ..., 9] 393 | var randomCells = genRandList(9); 394 | //delete 8 values from 3 lines 395 | for (var l=0; l<3; l++){ 396 | randomIndices = genRandList(8); 397 | for (var c=0; c<8; c++){ 398 | rows[randomCells[l]].columns[randomIndices[c]].class = ""; 399 | rows[randomCells[l]].columns[randomIndices[c]].value = ""; 400 | } 401 | } 402 | //delete 6 values from 2 lines 403 | for (var l=3; l<5; l++){ 404 | randomIndices = genRandList(6); 405 | for (var c=0; c<6; c++){ 406 | rows[randomCells[l]].columns[randomIndices[c]].class = ""; 407 | rows[randomCells[l]].columns[randomIndices[c]].value = ""; 408 | } 409 | } 410 | //delete 4 values from 2 lines 411 | for (var l=5; l<7; l++){ 412 | randomIndices = genRandList(4); 413 | for (var c=0; c<4; c++){ 414 | rows[randomCells[l]].columns[randomIndices[c]].class = ""; 415 | rows[randomCells[l]].columns[randomIndices[c]].value = ""; 416 | } 417 | } 418 | //delete 3 values from 2 square 419 | for (var l=7; l<9; l++){ 420 | var randomIndices = genRandList(3); 421 | for (var c=0; c<3; c++){ 422 | rows[randomCells[l]].columns[randomIndices[c]].class = ""; 423 | rows[randomCells[l]].columns[randomIndices[c]].value = ""; 424 | } 425 | } 426 | } 427 | $scope.rows_save = angular.copy(rows); 428 | $scope.rows = angular.copy(rows); 429 | }; 430 | 431 | $scope.check = function(rowId, columnId) { 432 | rowId = rowId - 1; 433 | columnId = columnId - 1; 434 | var value = $scope.rows[rowId].columns[columnId].value; 435 | 436 | if ($scope.rows[rowId].columns[columnId].class == "correct") 437 | return; 438 | 439 | if (!(!isNaN(parseFloat(value)) && isFinite(value))){ 440 | $scope.rows[rowId].columns[columnId].class = changeClass($scope.rows[rowId].columns[columnId].class, "error"); 441 | $scope.rows[rowId].columns[columnId].value = ''; 442 | return 443 | } 444 | 445 | $scope.rows[rowId].columns[columnId].class = changeClass($scope.rows[rowId].columns[columnId].class,"valide"); 446 | for(var j = 0; j < 9; j++) 447 | { 448 | if((value == $scope.rows[rowId].columns[j].value) && columnId != j){ 449 | $scope.rows[rowId].columns[columnId].class = changeClass($scope.rows[rowId].columns[columnId].class,"error"); 450 | $scope.rows[rowId].columns[j].class = changeClass($scope.rows[rowId].columns[j].class, "error"); 451 | } 452 | } 453 | for(var j = 0; j < 9; j++) 454 | { 455 | if((value == $scope.rows[j].columns[columnId].value) && rowId != j){ 456 | 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