kill me

/**
 * @param {string} str
 * @returns {number[]}
 */
function toCharCodeArray(str) {
    var result = [];
    for(var i = 0, length = str.length; i < length; i++) {
        var code = str.charCodeAt(i);
        result.push(code);
    }
    return result;
}

/**
 * @param {string} str
 */
function rockyHashStep(str) {
    let chars = toCharCodeArray(str);

    let total = 0;
    let evenOdd = 0;

    chars.forEach(code => {
        evenOdd = !evenOdd;
        total += code;
        if(evenOdd)
            total *= code;
        else
            total /= code;
    });
    return {next: total.toString(), cur:['0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f'][total & 0xF]};
}


/**
 * @param {string} str
 */
function rockyHash(str) {
    let total = "";
    let next = str + str;
    for(let i = 0; i < 64; i++) {
        let result = rockyHashStep(next);
        next = result.next;
        total += result.cur;
    }
    return total;
}