const express = require('express')
const mongoose = require('mongoose')
const cors = require('cors')
const dotenv = require('dotenv')

const server = express()
dotenv.config()


server.use(express.json())




server.get('/' , (req , res)=>{
    res.send('Hello')
})



//4.lancement du serveur
server.listen(process.env.PORT  , ()=>{
    console.log('server run on http://localhost:'+process.env.PORT)
})

const toFixed = (n, fixed) => ~~(Math.pow(10, fixed) * n) / Math.pow(10, fixed);
// Examples
toFixed(25.198726354, 1);       // 25.1
toFixed(25.198726354, 2);       // 25.19
toFixed(25.198726354, 3);       // 25.198
toFixed(25.198726354, 4);       // 25.1987
toFixed(25.198726354, 5);       // 25.19872
toFixed(25.198726354, 6);       // 25.198726

const union = (...arr) => [...new Set(arr.flat())];

// Example
union([1, 2], [2, 3], [3]);     // [1, 2, 3]

/**
 * @param {number[]} nums
 * @param {number} target
 * @return {number[]}
 */
var twoSum = function(nums, target) {
    for(let i = 0; i < nums.length; i++) {
        for(let j = 0; j < nums.length; j++) {
            if(nums[i] + nums[j] === target && i !== j) {
                return [i, j]
            }
        }
    }
};

/**
 * @param {number[]} nums
 * @return {number[]}
 */
var productExceptSelf = function(nums) {
    var output = [];
    var leftMult = 1;
    var rightMult = 1;
    for (var i=nums.length - 1; i >= 0; i--) {
        output[i] = rightMult;
        rightMult *= nums[i];
        console.log({output: JSON.stringify(output), i})
    }
    for (var j=0; j < nums.length; j++) {
        output[j] *= leftMult;
        leftMult *= nums[j];
        console.log({output: JSON.stringify(output), j})
    }
    return output;
};

console.log(productExceptSelf([1, 2, 3, 4]))

<div className="md:self-start sticky top-16 bg-background px-4 mt-1 sm:px-6 md:pt-4 lg:pl-8 lg:pr-4">
          <ScrollArea className="whitespace-nowrap">
            <div className="w-max flex md:flex-col gap-1 bg-transparent text-muted-foreground pb-2">
              {menuData.map((section) => (
                <Button
                  key={section.title}
                  onClick={() => handleScrollToSection(section.title)}
                  variant="ghost"
                  size="sm"
                  className={cn(
                    'w-auto md:w-full hover:cursor-pointer relative md:justify-end',
                    activeSection === section.title
                      ? cn(
                          'text-foreground after:absolute after:bottom-[-2px] after:bottom-0 after:w-full after:h-[2px] after:bg-primary',
                          'md:after:right-[-2px] md:after:top-0 md:after:h-full md:after:w-[2px]',
                        )
                      : '',
                  )}
                >
                  {section.title}
                </Button>
              ))}
            </div>
            <ScrollBar orientation="horizontal" />
          </ScrollArea>
        </div>