Skip to main content

Graph that changes with every step you make

This is task from my trainee interview. I haven't found the answer yet and hope you can help me. (Interview was about 2 weeks ago and I failed). So - you got robot-drone with wheels. You recieve photo from space which converts to matrix with heights above sea level (every element is square 100*100 meters). For example:

3 2 1 0 1 2 3
3 2 1 0 1 2 3
3 2 1 0 1 2 3
3 2 1 0 1 2 3

//thats the road between 2 mountains ( 0 0 0 0 - road, 1 higher, 2 higher and so on)
rules: every move costs 1 point of fuel, but ascent or descent - costs difference between heights. For example if you go from 4 to 2 - it would be (4-2 + 1 (every step costs one)) = 3 You need to find the shortest path from top left point to bottom right point. AND I KNOW HOW TO DO IT. We can use Dijkstra algorithm and everything works fine.

But the hardest point in the task - each diagonal move costs twice as much as the previous one. So first diagonal move costs 1, second 2, third 4, forth 8 and so on. I don't know how create this rule and how combine it with Dijkstra algorithm, to make look it simple and work fine.

If you have solution - please share it.

i just read a book on algorithms and it didn't help me(

Via Active questions tagged javascript - Stack Overflow https://ift.tt/2FdjaAW
Labels:

Comments

Post a Comment

Popular posts from this blog

Confusion between commands.Bot and discord.Client | Which one should I use?

Whenever you look at YouTube tutorials or code from this website there is a real variation. Some developers use client = discord.Client(intents=intents) while the others use bot = commands.Bot(command_prefix="something", intents=intents) . Now I know slightly about the difference but I get errors from different places from my code when I use either of them and its confusing. Especially since there has a few changes over the years in discord.py it is hard to find the real difference. I tried sticking to discord.Client then I found that there are more features in commands.Bot . Then I found errors when using commands.Bot . An example of this is: When I try to use commands.Bot client = commands.Bot(command_prefix=">",intents=intents) async def load(): for filename in os.listdir("./Cogs"): if filename.endswith(".py"): client.load_extension(f"Cogs.{filename[:-3]}") The above doesnt giveany response from my Cogs ...
Post a Comment
Read more

How to show number of registered users in Laravel based on usertype?

i'm trying to display data from the database in the admin dashboard i used this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count(); echo $users; ?> and i have successfully get the correct data from the database but what if i want to display a specific data for example in this user table there is "usertype" that specify if the user is normal user or admin i want to user the same code above but to display a specific usertype i tried this: <?php use Illuminate\Support\Facades\DB; $users = DB::table('users')->count()->WHERE usertype =admin; echo $users; ?> but it didn't work, what am i doing wrong? source https://stackoverflow.com/questions/68199726/how-to-show-number-of-registered-users-in-laravel-based-on-usertype
Post a Comment
Read more

Why is my reports service not connecting?

I am trying to pull some data from a Postgres database using Node.js and node-postures but I can't figure out why my service isn't connecting. my routes/index.js file: const express = require('express'); const router = express.Router(); const ordersCountController = require('../controllers/ordersCountController'); const ordersController = require('../controllers/ordersController'); const weeklyReportsController = require('../controllers/weeklyReportsController'); router.get('/orders_count', ordersCountController); router.get('/orders', ordersController); router.get('/weekly_reports', weeklyReportsController); module.exports = router; My controllers/weeklyReportsController.js file: const weeklyReportsService = require('../services/weeklyReportsService'); const weeklyReportsController = async (req, res) => { try { const data = await weeklyReportsService; res.json({data}) console...
Post a Comment
Read more