houseRobber.js

/**
 * @param {number[]} nums
 * @return {number}
 */
var rob = function(nums) {
    return helper(nums, 0);
};

var helper = function(nums, current) {
    if (current > nums.length) {
        return 0;
    }
    let option1 = nums[current] + helper(nums, current + 2);
    let option2 = helper(nums, current + 1);
    if (option1 >= option2) {
        return option1;
    }
    else {
        return option2;
    }
};