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<!-- Header -->
<header class="w-full border-b border-white/5 bg-[#0f0f1a]/80 backdrop-blur-md sticky top-0 z-50">
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<div class="w-8 h-8 rounded-lg bg-gradient-to-br from-indigo-500 to-purple-600 flex items-center justify-center font-bold text-white">E</div>
<h1 class="text-lg font-semibold tracking-tight text-white">DPLL <span class="text-indigo-400 font-light">Visualizer</span></h1>
</div>
<div class="flex items-center gap-4 text-sm text-slate-400">
<a href="https://huggingface.co/spaces/akhaliq/anycoder" target="_blank" class="hover:text-indigo-400 transition-colors flex items-center gap-2">
<span class="bg-indigo-500/10 text-indigo-400 px-2 py-1 rounded text-xs font-mono">Built with anycoder</span>
</a>
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</div>
</header>
<!-- Main Content -->
<main class="flex-1 w-full max-w-7xl mx-auto p-4 md:p-6 grid grid-cols-1 lg:grid-cols-12 gap-6">
<!-- Left Panel: Input & Controls -->
<div class="lg:col-span-4 space-y-6 flex flex-col">
<!-- Input Section -->
<div class="glass-panel p-5 space-y-4">
<div class="flex items-center justify-between">
<h2 class="text-sm font-semibold text-indigo-300 uppercase tracking-wider flex items-center gap-2">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"></path></svg>
Logic Formula (CNF)
</h2>
<div class="has-tooltip relative">
<span class="tooltip absolute bottom-full left-1/2 -translate-x-1/2 mb-2 px-2 py-1 bg-black text-xs text-white rounded whitespace-nowrap">Format: (a || !b) && (!a || c)</span>
<button id="info-btn" class="text-slate-500 hover:text-white transition-colors">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 16h-1v-4h-1m1-4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path></svg>
</button>
</div>
</div>
<textarea id="formula-input" class="logic-input w-full h-32 p-4 rounded-lg font-code text-sm text-emerald-300 resize-none" spellcheck="false" placeholder="Enter CNF formula...">(a || !b) && (!a || c) && (b || !c) && (!a || !c)</textarea>
<div class="flex gap-2">
<button onclick="app.reset()" class="flex-1 btn-glow px-4 py-2 rounded-lg bg-white/5 hover:bg-white/10 text-sm font-medium text-slate-300 border border-white/10">Reset</button>
<button onclick="app.solve()" class="flex-1 btn-glow px-4 py-2 rounded-lg bg-gradient-to-r from-indigo-600 to-purple-600 text-sm font-bold text-white shadow-lg shadow-indigo-900/20">
Run DPLL
</button>
</div>
<div class="grid grid-cols-2 gap-2">
<button onclick="app.loadExample(1)" class="px-3 py-2 rounded bg-white/5 hover:bg-white/10 text-xs text-slate-400 transition border border-white/5">Simple SAT</button>
<button onclick="app.loadExample(2)" class="px-3 py-2 rounded bg-white/5 hover:bg-white/10 text-xs text-slate-400 transition border border-white/5">UNSAT</button>
<button onclick="app.loadExample(3)" class="px-3 py-2 rounded bg-white/5 hover:bg-white/10 text-xs text-slate-400 transition border border-white/5">Complex</button>
<button onclick="app.loadExample(4)" class="px-3 py-2 rounded bg-white/5 hover:bg-white/10 text-xs text-slate-400 transition border border-white/5">4 Queens</button>
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<span class="text-xs font-medium text-slate-400">Animation Speed</span>
<span id="speed-val" class="text-xs font-mono text-indigo-400">1x</span>
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Elixir Implementation
</h2>
<div class="relative flex-1 bg-[#1e1e2e] rounded-lg border border-white/5 overflow-hidden group">
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Copy
</button>
<pre class="h-full overflow-auto p-4 text-xs"><code class="language-elixir" id="elixir-code">
defmodule DpllSolver do
@moduledoc """
A pure functional implementation of the DPLL algorithm.
"""
@spec solve([[integer]]) :: {:sat, map} | :unsat
def solve(clauses) do
case dpll(clauses, %{}) do
{:sat, model} -> {:sat, model}
:unsat -> :unsat
end
end
defp dpll(clauses, model) do
cond do
# Check for empty clauses (conflict)
Enum.any?(clauses, &(&1 == [])) -> :unsat
# Check if all clauses are satisfied
clauses == [] -> {:sat, model}
true ->
# 1. Unit Propagation
case find_unit_clause(clauses) do
nil ->
# 2. Pure Literal Elimination
case find_pure_literal(clauses) do
nil ->
# 3. Branching (Splitting)
var = choose_variable(clauses)
case dpll(assign(clauses, var, true), Map.put(model, var, true)) do
{:sat, m} -> {:sat, m}
:unsat -> dpll(assign(clauses, var, false), Map.put(model, var, false))
end
lit ->
dpll(assign(clauses, lit, true), Map.put(model, lit, true))
end
lit ->
dpll(assign(clauses, lit, true), Map.put(model, lit, true))
end
end
end
defp assign(clauses, lit, val) do
# Returns new clauses with lit satisfied and !lit removed
Enum.map(clauses, fn clause ->
cond do
lit in clause -> :removed
-lit in clause -> List.delete(clause, -lit)
true -> clause
end
end)
|> Enum.reject(&(&1 == :removed))
end
defp find_unit_clause(clauses) do
Enum.find_value(clauses, fn
[lit] -> lit
_ -> nil
end)
end
defp find_pure_literal(clauses) do
all_lits = List.flatten(clauses)
Enum.find_value(all_lits, fn lit ->
if (-lit) not in all_lits, do: lit, else: nil
end)
end
defp choose_variable(clauses) do
List.flatten(clauses) |> hd |> abs
end
end
</code></pre>
</div>
</div>
</div>
<!-- Middle: Visualization -->
<div class="lg:col-span-5 flex flex-col h-[600px] lg:h-auto glass-panel relative overflow-hidden">
<div class="absolute top-4 left-4 z-10 flex gap-2">
<div class="bg-black/40 backdrop-blur px-3 py-1 rounded-full border border-white/10 text-xs text-slate-300 flex items-center gap-2">
<span class="w-2 h-2 rounded-full bg-emerald-400"></span> SAT Path
</div>
<div class="bg-black/40 backdrop-blur px-3 py-1 rounded-full border border-white/10 text-xs text-slate-300 flex items-center gap-2">
<span class="w-2 h-2 rounded-full bg-rose-500"></span> UNSAT Branch
</div>
</div>
<div id="tree-container" class="w-full h-full relative overflow-hidden bg-gradient-to-b from-[#0f0f1a] to-[#131325]">
<!-- SVG Tree will be rendered here -->
<svg id="tree-svg" class="w-full h-full absolute top-0 left-0 origin-top"></svg>
<div id="node-layer" class="absolute top-0 left-0 w-full h-full pointer-events-none"></div>
<div id="start-msg" class="absolute inset-0 flex items-center justify-center text-slate-600">
<div class="text-center">
<svg class="w-12 h-12 mx-auto mb-3 opacity-50" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14.752 11.168l-3.197-2.132A1 1 0 0010 9.87v4.263a1 1 0 001.555.832l3.197-2.132a1 1 0 000-1.664z"></path><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M21 12a9 9 0 11-18 0 9 9 0 0118 0z"></path></svg>
<p class="font-mono text-sm">Click "Run DPLL" to start visualization</p>
</div>
</div>
</div>
</div>
<!-- Right Panel: Logs & Status -->
<div class="lg:col-span-3 space-y-6 flex flex-col">
<!-- Status Panel -->
<div class="glass-panel p-5">
<h2 class="text-sm font-semibold text-emerald-300 uppercase tracking-wider mb-4">System Status</h2>
<div class="space-y-3">
<div class="flex justify-between items-center">
<span class="text-xs text-slate-400">Result</span>
<span id="result-badge" class="px-2 py-0.5 rounded text-xs font-bold bg-slate-700 text-slate-300">--</span>
</div>
<div class="flex justify-between items-center">
<span class="text-xs text-slate-400">Variables</span>
<span id="var-count" class="font-mono text-sm text-white">0</span>
</div>
<div class="flex justify-between items-center">
<span class="text-xs text-slate-400">Clauses</span>
<span id="clause-count" class="font-mono text-sm text-white">0</span>
</div>
<div class="flex justify-between items-center">
<span class="text-xs text-slate-400">Decisions</span>
<span id="decision-count" class="font-mono text-sm text-white">0</span>
</div>
</div>
</div>
<!-- Unit Propagation Log -->
<div class="glass-panel p-5 flex-1 flex flex-col min-h-[250px]">
<h2 class="text-sm font-semibold text-amber-300 uppercase tracking-wider mb-3 flex items-center gap-2">
<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M13 10V3L4 14h7v7l9-11h-7z"></path></svg>
Inference Log
</h2>
<div id="inference-log" class="flex-1 overflow-y-auto font-mono text-xs space-y-2 pr-2">
<div class="text-slate-600 italic">Waiting for execution...</div>
</div>
</div>
<!-- Assignment Table -->
<div class="glass-panel p-5">
<h2 class="text-sm font-semibold text-blue-300 uppercase tracking-wider mb-3">Final Assignment</h2>
<div id="assignment-grid" class="grid grid-cols-4 gap-2">
<!-- Dynamic assignments -->
<div class="col-span-4 text-center text-xs text-slate-600 py-2">No solution yet</div>
</div>
</div>
</div>
</main>
<script>
/**
* DPLL Logic Solver & Visualizer
* Implements the DPLL algorithm with step-by-step visualization.
*/
class DPLLVisualizer {
constructor() {
this.svg = document.getElementById('tree-svg');
this.nodeLayer = document.getElementById('node-layer');
this.logContainer = document.getElementById('inference-log');
this.assignmentGrid = document.getElementById('assignment-grid');
this.speedSlider = document.getElementById('speed-slider');
this.speedVal = document.getElementById('speed-val');
this.speed = 2;
this.isRunning = false;
this.treeData = null;
this.currentNodes = [];
this.idCounter = 0;
this.scale = 1;
this.translateX = 0;
this.translateY = 0;
// Bind UI events
this.speedSlider.addEventListener('input', (e) => {
this.speed = parseInt(e.target.value);
this.speedVal.textContent = this.speed + 'x';
});
// Pan/Zoom listeners for SVG
this.setupPanZoom();
// HighlightJS
hljs.highlightAll();
}
setupPanZoom() {
const container = document.getElementById('tree-container');
let isDragging = false;
let startX, startY;
container.addEventListener('mousedown', (e) => {
isDragging = true;
startX = e.clientX - this.translateX;
startY = e.clientY - this.translateY;
});
window.addEventListener('mousemove', (e) => {
if (!isDragging) return;
this.translateX = e.clientX - startX;
this.translateY = e.clientY - startY;
this.updateTransform();
});
window.addEventListener('mouseup', () => isDragging = false);
container.addEventListener('wheel', (e) => {
e.preventDefault();
const delta = e.deltaY > 0 ? 0.9 : 1.1;
this.scale *= delta;
this.updateTransform();
});
}
updateTransform() {
const transform = `translate(${this.translateX}px, ${this.translateY}px) scale(${this.scale})`;
this.svg.style.transform = transform;
this.nodeLayer.style.transform = transform;
}
resetView() {
this.scale = 1;
this.translateX = 0;
this.translateY = 0;
this.updateTransform();
}
// --- Logic Parsing ---
parseFormula(input) {
// Remove whitespace
let clean = input.replace(/\s+/g, '');
// Replace operators
clean = clean.replace(/\|\|/g, ' OR ');
clean = clean.replace(/&&/g, ' AND ');
clean = clean.replace(/!/g, ' NOT ');
// Extract clauses between ()
const clauses = [];
const regex = /\(([^)]+)\)/g;
let match;
while ((match = regex.exec(clean)) !== null) {
clauses.push(match[1]);
}
if (clauses.length === 0) throw new Error("Invalid format. Use (a || !b) && (c)");
// Map variables to integers
const varMap = {};
let nextVar = 1;
const getVar = (name) => {
if (!varMap[name]) varMap[name] = nextVar++;
return varMap[name];
};
const cnf = clauses.map(clause => {
const lits = clause.split('OR').map(l => l.trim());
return lits.map(l => {
const isNeg = l.includes('NOT');
const name = l.replace('NOT', '').trim();
const id = getVar(name);
return isNeg ? -id : id;
});
});
return { cnf, varMap, varCount: nextVar - 1 };
}
// --- DPLL Algorithm (Async for visualization) ---
async solve() {
if (this.isRunning) return;
this.isRunning = true;
this.resetUI();
const input = document.getElementById('formula-input').value;
let cnf, varMap, varCount;
try {
const parsed = this.parseFormula(input);
cnf = parsed.cnf;
varMap = parsed.varMap;
varCount = parsed.varCount;
} catch (e) {
alert("Parsing Error: " + e.message);
this.isRunning = false;
return;
}
// Update Stats
document.getElementById('var-count').textContent = varCount;
document.getElementById('clause-count').textContent = cnf.length;
document.getElementById('start-msg').style.display = 'none';
// Create Inverse Map for display
const invMap = {};
Object.entries(varMap).forEach(([k, v]) => invMap[v] = k);
// Tree root
const rootId = this.idCounter++;
const rootNode = { id: rootId, x: 300, y: 40, label: 'Start', parent: null, status: 'active' };
this.treeData = rootNode;
this.drawNode(rootNode);
// Run DPLL
const startTime = performance.now();
const result = await this.dpll(cnf, {}, rootNode, invMap, 0);
const endTime = performance.now();
// Finalize
const resultBadge = document.getElementById('result-badge');
if (result.sat) {
resultBadge.textContent = 'SATISFIABLE';
resultBadge.className = 'px-2 py-0.5 rounded text-xs font-bold bg-emerald-500/20 text-emerald-400 border border-emerald-500/30';
this.renderAssignment(result.model, invMap);
this.flashSuccess(rootNode);
} else {
resultBadge.textContent = 'UNSATISFIABLE';
resultBadge.className = 'px-2 py-0.5 rounded text-xs font-bold bg-rose-500/20 text-rose-400 border border-rose-500/30';
}
this.log(`Finished in ${(endTime - startTime).toFixed(1)}ms`, 'info');
this.isRunning = false;
}
async dpll(clauses, model, parentNode, invMap, depth) {
await this.sleep();
// Check Empty Clause (Conflict)
if (clauses.some(c => c.length === 0)) {
parentNode.status = 'conflict';
this.updateNodeVisual(parentNode);
this.log(`Conflict detected at depth ${depth}`, 'error');
return { sat: false };
}
// Check All Satisfied
if (clauses.length === 0) {
parentNode.status = 'sat';
this.updateNodeVisual(parentNode);
this.log(`Model found: ${JSON.stringify(model)}`, 'success');
return { sat: true, model: { ...model } };
}
// Unit Propagation
const unit = this.findUnit(clauses);
if (unit) {
const litName = unit > 0 ? invMap[unit] : `!${invMap[-unit]}`;
this.log(`Unit Prop: ${litName} = true`, 'warning');
const newClauses = this.simplify(clauses, unit);
const newModel = { ...model, [Math.abs(unit)]: unit > 0 };
// Visuals for unit prop don't branch, just extend the line
const nextNode = this.createChildNode(parentNode, litName, depth + 1, 'unit');
this.drawEdge(parentNode, nextNode);
return this.dpll(newClauses, newModel, nextNode, invMap, depth + 1);
}
// Pure Literal
const pure = this.findPure(clauses);
if (pure) {
const litName = pure > 0 ? invMap[pure] : `!${invMap[-pure]}`;
this.log(`Pure Lit: ${litName} = true`, 'warning');
const newClauses = this.simplify(clauses, pure);
const newModel = { ...model, [Math.abs(pure)]: pure > 0 };
const nextNode = this.createChildNode(parentNode, litName, depth + 1, 'unit');
this.drawEdge(parentNode, nextNode);
return this.dpll(newClauses, newModel, nextNode, invMap, depth + 1);
}
// Branching (Splitting)
const variable = this.chooseVar(clauses);
const varName = invMap[variable];
this.log(`Branch on ${varName}`, 'info');
document.getElementById('decision-count').textContent = parseInt(document.getElementById('decision-count').textContent) + 1;
// Try True
const trueNode = this.createChildNode(parentNode, `${varName}=T`, depth + 1, 'branch');
this.drawEdge(parentNode, trueNode);
const trueResult = await this.dpll(
this.simplify(clauses, variable),
{ ...model, [variable]: true },
trueNode,
invMap,
depth + 1
);
if (trueResult.sat) return trueResult;
// Try False
const falseNode = this.createChildNode(parentNode, `${varName}=F`, depth + 1, 'branch');
this.drawEdge(parentNode, falseNode);
return this.dpll(
this.simplify(clauses, -variable),
{ ...model, [variable]: false },
falseNode,
invMap,
depth + 1
);
}
// --- Logic Helpers ---
findUnit(clauses) {
for (let c of clauses) {
if (c.length === 1) return c[0];
}
return null;
}
findPure(clauses) {
const all = clauses.flat();
const counts = {};
all.forEach(l => {
const v = Math.abs(l);
if (!counts[v]) counts[v] = { pos: 0, neg: 0 };
if (l > 0) counts[v].pos++; else counts[v].neg++;
});
for (let v in counts) {
if (counts[v].pos > 0 && counts[v].neg === 0) return parseInt(v);
if (counts[v].neg > 0 && counts[v].pos === 0) return -parseInt(v);
}
return null;
}
chooseVar(clauses) {
return Math.abs(clauses[0][0]);
}
simplify(clauses, lit) {
return clauses
.filter(c => !c.includes(lit)) // Remove clauses containing lit
.map(c => c.filter(x => x !== -lit)); // Remove -lit from clauses
}
// --- Visualization Helpers ---
createChildNode(parent, label, depth, type) {
const id = this.idCounter++;
// Calculate position based on tree layout
// Simple vertical layout with spacing based on depth
const y = parent.y + 80;
const xOffset = (type === 'branch' ? 120 : 0) / (depth + 1);
// Random jitter to prevent perfect overlap in unit chains
const jitter = (Math.random() - 0.5) * 40;
const node = {
id: id,
x: parent.x + (type === 'branch' ? (parent.childrenLeft ? -80 : 80) : jitter),
y: y,
label: label,
parent: parent,
status: 'active',
type: type
};
if (type === 'branch') parent.childrenLeft = !parent.childrenLeft; // Toggle side
this.drawNode(node);
return node;
}
drawNode(node) {
const el = document.createElement('div');
el.id = `node-${node.id}`;
el.className = `absolute transform -translate-x-1/2 -translate-y-1/2 node-enter flex items-center justify-center w-12 h-12 rounded-full border-2 bg-[#1e1e2e] z-20 font-mono text-xs font-bold text-white shadow-lg transition-colors duration-500`;
el.style.left = node.x + 'px';
el.style.top = node.y + 'px';
el.style.borderColor = '#6366f1';
el.style.boxShadow = '0 0 15px rgba(99, 102, 241, 0.4)';
el.innerHTML = `<span class="truncate px-1">${node.label}</span>`;
this.nodeLayer.appendChild(el);
// Pan view to follow node if it goes off screen
const container = document.getElementById('tree-container');
if (node.y > 500 + Math.abs(this.translateY)) {
this.translateY -= 100;
this.updateTransform();
}
}
drawEdge(parent, child) {
const path = document.createElementNS('http://www.w3.org/2000/svg', 'path');
const d = `M ${parent.x} ${parent.y + 24} L ${child.x} ${child.y - 24}`;
path.setAttribute('d', d);
path.setAttribute('stroke', '#4b5563');
path.setAttribute('stroke-width', '2');
path.setAttribute('fill', 'none');
path.classList.add('edge-path');
this.svg.appendChild(path);
}
updateNodeVisual(node) {
const el = document.getElementById(`node-${node.id}`);
if (!el) return;
if (node.status === 'conflict') {
el.style.borderColor = '#f43f5e';
el.style.boxShadow = '0 0 15px rgba(244, 63, 94, 0.4)';
el.style.color = '#fda4af';
} else if (node.status === 'sat') {
el.style.borderColor = '#34d399';
el.style.boxShadow = '0 0 20px rgba(52, 211, 153, 0.6)';
el.style.backgroundColor = '#064e3b';
}
}
flashSuccess(node) {
// Trace back path
let curr = node;
while (curr) {
const el = document.getElementById(`node-${curr.id}`);
if (el) {
el.style.borderColor = '#34d399';
el.style.color = '#fff';
el.style.zIndex = 30;
}
// Highlight edge to parent
// (Simplified for this demo, just highlighting nodes)
curr = curr.parent;
}
}
// --- UI Helpers ---
log(msg, type) {
const div = document.createElement('div');
div.className = 'py-1 border-l-2 pl-2 text-xs font-mono animate-pulse';
if (type === 'error') {
div.classList.add('border-rose-500', 'text-rose-400');
div.innerHTML = `<span class="font-bold">✗</span> ${msg}`;
} else if (type === 'success') {
div.classList.add('border-emerald-500', 'text-emerald-400');
div.innerHTML = `<span class="font-bold">✓</span> ${msg}`;
} else if (type === 'warning') {
div.classList.add('border-amber-500', 'text-amber-400');
div.innerHTML = `<span class="font-bold">⚡</span> ${msg}`;
} else {
div.classList.add('border-indigo-500', 'text-indigo-300');
div.innerHTML = `<span class="font-bold">ℹ</span> ${msg}`;
}
this.logContainer.prepend(div); // Add to top
// Remove pulse after a while
setTimeout(() => div.classList.remove('animate-pulse'), 1000);
}
renderAssignment(model, invMap) {
this.assignmentGrid.innerHTML = '';
Object.entries(model).forEach(([k, v]) => {
const name = invMap[k];
const val = v ? 'T' : 'F';
const color = v ? 'text-emerald-400 border-emerald-500/30 bg-emerald-500/10' : 'text-rose-400 border-rose-500/30 bg-rose-500/10';
const div = document.createElement('div');
div.className = `flex flex-col items-center justify-center p-2 rounded border ${color}`;
div.innerHTML = `
<span class="text-xs font-bold opacity-70">${name}</span>
<span class="text-lg font-bold font-mono">${val}</span>
`;
this.assignmentGrid.appendChild(div);
});
}
resetUI() {
this.svg.innerHTML = '';
this.nodeLayer.innerHTML = '';
this.logContainer.innerHTML = '<div class="text-slate-600 italic">Starting process...</div>';
this.assignmentGrid.innerHTML = '<div class="col-span-4 text-center text-xs text-slate-600 py-2">No solution yet</div>';
document.getElementById('result-badge').textContent = '--';
document.getElementById('result-badge').className = 'px-2 py-0.5 rounded text-xs font-bold bg-slate-700 text-slate-300';
document.getElementById('decision-count').textContent = '0';
this.idCounter = 0;
this.resetView();
}
sleep() {
// Base delay 1000ms, divided by speed multiplier
const delay = 800 / this.speed;
return new Promise(resolve => setTimeout(resolve, delay));
}
reset() {
if (this.isRunning) return;
this.resetUI();
document.getElementById('start-msg').style.display = 'flex';
}
loadExample(id) {
if (this.isRunning) return;
const examples = {
1: "(a || !b) && (!a || c) && (b || !c)", // SAT
2: "(a) && (!a || b) && (!b)", // UNSAT
3: "(x || y) && (!x || y || z) && (!y || !z) && (x || !y || z)", // SAT
4: "(!Q1_1) && (!Q2_1) && (!Q2_2) && (Q2_1 || Q2_2) && (!Q2_1 || !Q2_2) && (!Q3_1) && (!Q3_2) && (!Q3_3) && (Q3_1 || Q3_2 || Q3_3) && (!Q3_1 || !Q3_2) && (!Q3_1 || !Q3_3) && (!Q3_2 || !Q3_3)"
};
document.getElementById('formula-input').value = examples[id];
}
copyCode() {
const code = document.getElementById('elixir-code').textContent;
navigator.clipboard.writeText(code).then(() => {
const btn = document.querySelector('button[onclick="app.copyCode()"]');
const original = btn.textContent;
btn.textContent = "Copied!";
setTimeout(() => btn.textContent = original, 2000);
});
}
}
// Initialize
const app = new DPLLVisualizer();
// Initial setup
app.resetView();
</script>
</body>
</html> |