productOfArrayExceptSelf.js

/**
 * @param {number[]} nums
 * @return {number[]}
 */
var productExceptSelf = function(nums) {
    var output = nums.slice().fill(1);
    var temp = 1;
    
    for (var i = 0; i < nums.length; i++) {
        output[i] = temp;
        temp *= nums[i];
    }
    
    temp = 1;
    
    for (var i = nums.length - 1; i >= 0; i--) {
        output[i] *= temp;
        temp *= nums[i]
    }
    
    return output;
};