Algorithm-Visualization/graph_traversal.html at master · forkcodeaiyc/Algorithm-Visualization

History

494 lines (449 loc) · 19 KB

Raw

100

101

102

103

104

105

106

107

108

109

110

111

112

113

114

115

116

117

118

119

120

121

122

123

124

125

126

127

128

129

130

131

132

133

134

135

136

137

138

139

140

141

142

143

144

145

146

147

148

149

150

151

152

153

154

155

156

157

158

159

160

161

162

163

164

165

166

167

168

169

170

171

172

173

174

175

176

177

178

179

180

181

182

183

184

185

186

187

188

189

190

191

192

193

194

195

196

197

198

199

200

201

202

203

204

205

206

207

208

209

210

211

212

213

214

215

216

217

218

219

220

221

222

223

224

225

226

227

228

229

230

231

232

233

234

235

236

237

238

239

240

241

242

243

244

245

246

247

248

249

250

251

252

253

254

255

256

257

258

259

260

261

262

263

264

265

266

267

268

269

270

271

272

273

274

275

276

277

278

279

280

281

282

283

284

285

286

287

288

289

290

291

292

293

294

295

296

297

298

299

300

301

302

303

304

305

306

307

308

309

310

311

312

313

314

315

316

317

318

319

320

321

322

323

324

325

326

327

328

329

330

331

332

333

334

335

336

337

338

339

340

341

342

343

344

345

346

347

348

349

350

351

352

353

354

355

356

357

358

359

360

361

362

363

364

365

366

367

368

369

370

371

372

373

374

375

376

377

378

379

380

381

382

383

384

385

386

387

388

389

390

391

392

393

394

395

396

397

398

399

400

401

402

403

404

405

406

407

408

409

410

411

412

413

414

415

416

417

418

419

420

421

422

423

424

425

426

427

428

429

430

431

432

433

434

435

436

437

438

439

440

441

442

443

444

445

446

447

448

449

450

451

452

453

454

455

456

457

458

459

460

461

462

463

464

465

466

467

468

469

470

471

472

473

474

475

476

477

478

479

480

481

482

483

484

485

486

487

488

489

490

491

492

493

494

<!DOCTYPE html>

<head>

<title>VisuAlgo - Graph Traversal</title>

</head>

<body>

<a class="selected-viz">Graph Traversal</a>

</span>

<!--a id="fb-login" href="#" target="_blank">Facebook connect</a>

<fb:login-button show-faces="false" width="200" max-rows="1" style="float: right; margin-top: 9px;"></fb:login-button>

</span-->

<div id="mode-button">Exploration Mode<img src="img/arrow_white.png" alt="Home"/></div>

<a href="#">Tutorial Mode</a>

</div>

<p id="create" onclick=createRandom(true)>Random Graph</p>

<p id="sample">Sample Graphs</p>

<p id="directedChange" onclick=directedChange() >Directed <-> Undirected </p>

<p id="bridge" onclick=bridge() >Cut Vertex & Bridge</p>

<p id="scc"> SCC Algorithms</p>

<p id="bipartite">Bipartite Graph check</p>

<p id="twosat">Two-SAT checker</p>

</div>

</div>

</div>

</div>

</div>

</div>

<div id="tarjan" class="execAction new-menu-option coloured-menu-option" onclick=tarjan()><p>Tarjan</p></div>

<div id="kosaraju" class="execAction new-menu-option coloured-menu-option" onclick=kosaraju()><p>Kosaraju</p></div>

</div>

</div>

</div>

<div class="new-menu-option coloured-menu-option"><p>Number of clauses</p></div>

<div class="new-menu-option coloured-menu-option"><p>Number of variables</p></div>

</div>

</div>

</div>

<a id="trigger-about">About</a>

<a id="trigger-terms">Terms of use</a>

</div>

</div>

In the Graph-Traversal problem, we mainly use DFS (Depth-First-Search) and BFS (Breadth-Frist-Search) to travel the graph.<br/><br/> We also mention about a lot of DFS and BFS variants such as cut vertex, bridge and SCC algorithms, ...

</div>

Choose a sample graph and try running the different algorithms on it:<br><br>The basis O(n) DFS and BFS<br>The O(n) cut vertex and bridge algorithm<br>The scc algorithms<br>The bipartite graph checker<br>The topological sort algorithms<br>And the two-sat checker algorithm<br>...<div class="tutorial-next">Next<img src="img/arrow_white_right.png"/></div>

</div>

When the algorithm is running, the animation will be show here.

</div>

The status bar explains the execution of the algorithm at each animation step.

</div>

You can also follow the psuedocode highlights to trace the algorithm.

</div>

Control the animation with the player controls! Keyboard shortcuts are:<br/>

<div style="margin-top: 8px;"><strong>Spacebar:</strong> play/pause/replay</div>

<strong>Left/right arrows:</strong> step backward/step forward<br/>

<strong>-/+:</strong> decrease/increase speed<br/>

</div>

Return to "Exploration Mode" to start exploring!

</div>

//start by showing actions panel

$('#play').hide();

var gtWidget = new GraphTraversal();

var gw = gtWidget.getGraphWidget();

gtWidget.examples(SSSP_EXAMPLE_CP3_4_17);

function createRandom(allowNegative) {

if(isPlaying) { stop(); }

if (mode=="exploration") {

gtWidget.initRandom(allowNegative);

$('#progress-bar').slider( "option", "max", 0);

closeCreate();

isPlaying = false;

}

function sample(id) {

if(isPlaying) { stop(); }

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.examples(id)) {

$('#progress-bar').slider( "option", "max", 0);

closeSamples();

isPlaying = false;

}

}, 500);

}

function bfs() {

if(isPlaying) { stop(); }

var sourceS = parseInt($('#bfs-v').val());

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.bfs(sourceS)) {

$('#current-action').show();

$('#current-action p').html("BFS(" + sourceS + ")");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function dfs() {

if(isPlaying) {stop();}

var sourceS = parseInt($('#dfs-v').val());

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.dfs(sourceS)) {

$('#current-action').show();

$('#current-action p').html("DFS(" + sourceS + ")");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function bridge() {

if(isPlaying) {stop();}

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.bridge()) {

$('#current-action').show();

$('#current-action p').html("Articulation Points and Bridges check");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function directedChange() {

if(isPlaying) {stop();}

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.directedChange()) {

$('#progress-bar').slider( "option", "max", 0);

isPlaying = false;

}

}, 500);

}

function tarjan() {

if(isPlaying) {stop();}

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.tarjan()) {

$('#current-action').show();

$('#current-action p').html("Tarjan's Algorithm");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function kosaraju() {

if(isPlaying) {stop();}

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.kosaraju()) {

$('#current-action').show();

$('#current-action p').html("Kosaraju's Algorithm");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function bipartiteDfs() {

if(isPlaying) {stop();}

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.bipartiteDfs()) {

$('#current-action').show();

$('#current-action p').html("Bipartite Graph Checker");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function bipartiteBfs() {

if(isPlaying) {stop();}

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.bipartiteBfs()) {

$('#current-action').show();

$('#current-action p').html("Bipartite Graph Checker");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function toposortDfs() {

if(isPlaying) {stop();}

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.toposortDfs()) {

$('#current-action').show();

$('#current-action p').html("Topological Sort");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function toposortBfs() {

if(isPlaying) {stop();}

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.toposortBfs()) {

$('#current-action').show();

$('#current-action p').html("Topological Sort");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

function twosat() {

if(isPlaying) {stop();}

var a = parseInt($('#twosat-v1').val());

var b = parseInt($('#twosat-v2').val());

setTimeout( function() {

if ((mode=="exploration")&&gtWidget.twosat(a, b)) {

$('#current-action').show();

$('#current-action p').html("2-SAT Checker");

$('#progress-bar').slider( "option", "max", gw.getTotalIteration()-1);

triggerRightPanels();

isPlaying = true;

}

}, 500);

}

//playback controls might fit better in viz.js, but put here in case some viz does not use GraphWidget.js

var isPaused = false;

function isAtEnd() {

return (gw.getCurrentIteration()==(gw.getTotalIteration()-1));

}

function pause() {

if(isPlaying) {

isPaused = true;

gw.pause();

$('#play').show();

$('#pause').hide();

}

function play() {

if(isPlaying) {

isPaused = false;

$('#pause').show();

$('#play').hide();

if(isAtEnd()) {

gw.replay();

} else {

gw.play();

}

function stepForward() {

if(isPlaying) {

pause();

gw.forceNext(250);

}

function stepBackward() {

if(isPlaying) {

pause();

gw.forcePrevious(250);

}

function goToBeginning() {

if(isPlaying) {

gw.jumpToIteration(0,0);

pause();

}

function goToEnd() {

if(isPlaying) {

gw.jumpToIteration(gw.getTotalIteration()-1,0);

pause();

}

function stop() {

gw.stop();

isPaused = false;

isPlaying = false;

$('#pause').show();

$('#play').hide();

}

//shortcut keys for playback controls

$(document).keydown( function(event) {

if(event.which == 32) { //spacebar

if(isPaused) { play(); } else { pause(); }

} else if(event.which == 37) { //left arrow

stepBackward();

} else if(event.which == 39) { //right arrow

stepForward();

} else if(event.which == 35) { //end

stop();

} else if (event.which == 189) { //minus

var d = (2200-gw.getAnimationDuration())-100;

if(d > 0) {

$("#speed-input").slider("value", d);

} else {

$("#speed-input").slider("value", 0);

}

} else if (event.which == 187) { //plus

var d = (2200-gw.getAnimationDuration())+100;

if(d <= 2000) {

$("#speed-input").slider("value", d);

} else {

$("#speed-input").slider("value", 2000);

}

});

//sliders

$("#speed-input").slider({

min: 200,

max: 2000,

value: 1700,

change: function(event, ui) {

gw.setAnimationDuration(2200-ui.value);

}

});

$("#progress-bar").slider({

range: "min",

min: 0,

value: 0,

slide: function(event, ui) {

gw.pause();

gw.jumpToIteration(ui.value,0);

stop: function(event, ui) {

if(!isPaused) { setTimeout( function(){gw.play();}, 500) }

}

});

</script>

</body>

</html>

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

FilesExpand file tree

graph_traversal.html

Latest commit

History

graph_traversal.html

File metadata and controls