screen ratio calculation chairul umam

def (a, b) = ratio 1920, 1080

println "$a:$b"

def ratio(height, width) {
    def gcd = gcd height, width
    height > width ? [height / gcd, width / gcd] : [width / gcd, height / gcd]
}

def gcd(p, q) { q == 0 ? p : gcd(q, p % q) }