quaco.js/src/Visualizer/Visualizer.js

A lightweight modular Quantum Computing Simulator in JavaScript. Supports qubits, quantum gates, entanglement, circuits, algorithms, and visualization.

// src/Visualizer/Visualizer.js

/**
 * Simple Visualizer for Quantum Measurement Histograms.
 */
export class Visualizer {
    /**
     * Displays a text-based histogram on console.
     * @param {object} results - Mapping of bitstring -> count
     * @param {number} maxBarWidth - Max width of the bar (default 50)
     */
    static showHistogram(results, maxBarWidth = 50) {
        const entries = Object.entries(results);
        const maxCount = Math.max(...entries.map(([_, count]) => count));

        console.log("\n=== Measurement Results ===\n");

        for (const [state, count] of entries) {
            const barLength = Math.round((count / maxCount) * maxBarWidth);
            const bar = '█'.repeat(barLength);
            console.log(`${state}: ${bar} (${count})`);
        }

        console.log("\n============================\n");
    }
}