Get a "V" and "P" representation of dragon fractal

write-dragon.js

const getDragonBit = (n) => {
    while ((n & 1) == 0) {
        n = n >> 1;
    }
    return 1 - ((n >> 1) & 1)
}

const getDragon = n => {
    let str = ""
    for (i = 1; i < Math.pow(2, n); i++) {
        str = (getDragonBit(i) == 1 ? "V" : "P") + str
    }
    return str
}

const n = 4;
console.log(getDragon(n)) // PPVPPVVVPPVVPVV