Method calculateSizeStatistics

pixelizer.js:350–371

(sizes)

    }

    calculateSizeStatistics(sizes) {
        if (sizes.length === 0) return { mode: 1, gcd: 1, variance: 0 };
        
        // 计算众数
        const frequency = {};
        sizes.forEach(size => {
            frequency[size] = (frequency[size] || 0) + 1;
        });
        
        const mode = parseInt(Object.keys(frequency).reduce((a, b) => 
            frequency[a] > frequency[b] ? a : b
        ));
        
        // 计算GCD
        const gcd = sizes.reduce((a, b) => this.gcd(a, b));
        
        // 计算方差
        const mean = sizes.reduce((a, b) => a + b) / sizes.length;
        const variance = sizes.reduce((sum, size) => sum + Math.pow(size - mean, 2), 0) / sizes.length;
        
        return { mode, gcd, variance, sizes };
    }

    gcd(a, b) {
        return b === 0 ? a : this.gcd(b, a % b);