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Autonomous Systems Interview Preparations

This document contains some interview questions as provided in Udacity's Robotics Engineer Nanodegree program.

Project Instructions

Role Selection

It's time for you to practice your interviewing skills! Over the next several pages, you'll see that we have specific roles in Autonomous Systems, just like the videos you watched before:

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/* MIT License

Copyright (c) 2016 JetBrains http://www.jetbrains.com

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

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{
    "bip": "172.39.1.5/24",
    "fixed-cidr": "172.39.1.0/25",
    "runtimes": {
        "nvidia": {
            "path": "nvidia-container-runtime",
            "runtimeArgs": []
        }
    }
}

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#!/usr/bin/env bash

set -eo pipefail

echo "Creating Git repository ..."
git init

echo "Applying private user configuration ..."
git config user.name "<YOUR NAME>"
git config user.email "<YOUR EMAIL ADDRESS>"

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## Unity ##

*.cs diff=csharp text
*.cginc text
*.shader text

*.mat merge=unityyamlmerge eol=lf
*.anim merge=unityyamlmerge eol=lf
*.unity merge=unityyamlmerge eol=lf
*.prefab merge=unityyamlmerge eol=lf

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from sshtunnel import SSHTunnelForwarder
import pymongo

MONGO_HOST = "IP_ADDRESS"
MONGO_USER = "USERNAME"
MONGO_PASS = "PASSWORD"
MONGO_DB = "DATABASE_NAME"
MONGO_COLLECTION = "COLLECTION_NAME"

# define ssh tunnel

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"""Information Retrieval metrics

Useful Resources:
http://www.cs.utexas.edu/~mooney/ir-course/slides/Evaluation.ppt
http://www.nii.ac.jp/TechReports/05-014E.pdf
http://www.stanford.edu/class/cs276/handouts/EvaluationNew-handout-6-per.pdf
http://hal.archives-ouvertes.fr/docs/00/72/67/60/PDF/07-busa-fekete.pdf
Learning to Rank for Information Retrieval (Tie-Yan Liu)
"""
import numpy as np

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Code is clean if it can be understood easily – by everyone on the team. Clean code can be read and enhanced by a developer other than its original author. With understandability comes readability, changeability, extensibility and maintainability.

---

General rules

1. Follow standard conventions.
2. Keep it simple stupid. Simpler is always better. Reduce complexity as much as possible.
3. Boy scout rule. Leave the campground cleaner than you found it.
4. Always find root cause. Always look for the root cause of a problem.

Design rules

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from typing import Tuple

def jaccard(a: Tuple[int, int, int, int], b: Tuple[int, int, int, int]) -> float:
    ax, ay, aw, ah = a
    bx, by, bw, bh = b
    left_i = max(ax, bx)
    top_i = max(ay, by)
    right_i = min(ax + aw, bx + bw)
    bottom_i = min(ay + ah, by + bh)
    

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// arduino LED traffic light for cars and pedestrians
// Pin 7 gives power for the button, which is linked to pin 2 (--> IRQ 0)
// Red LEDs on 13 and 6, yellow LED on 12, green LEDs on 11 and 5, all with a 150 Ohm resistor
 
// http://www.youtube.com/watch?v=5iLaYhyKOtM
// http://www.vimeo.com/9589691
// Sketch backup from https://pastebin.com/f4f3d205a
 
const int trafficPinR = 13;
const int trafficPinY = 12;