function hanoi(disks, src, dest, aux) {
    if (disks > 0) {
        hanoi(disks - 1, src, aux, dest);
        console.log(`Move disk ${disks} : ${src} -> ${dest}`);
        hanoi(disks - 1, aux, dest, src);
    }
}

disks = 3;
console.log(`Using ${disks} ${disks > 1 ? 'disks' : 'disk'}`);
hanoi(disks, 'A', 'C', 'B');