Solution for AWS's phone interview 2021 (Python)

aws_phone_interview_2021.ipynb

{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# AWS phone interview 2021"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "Implement a deck of cards (52 cards).  \n",
    "It should have a `shuffle` and a `draw` (take the card at the top of the deck of cards) functionality.  \n",
    "**Suits:** Spades (♠), Clubs (♣), Hearts (♥), and Diamonds (♦).  \n",
    "**Values:** 2, 3, 4, 5, 6, 7, 8, 9, 10, Jack, Queen, King, and Ace."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import random\n",
    "\n",
    "\n",
    "class PlayingCards:\n",
    "    \"\"\"52 playing cards.\"\"\"\n",
    "\n",
    "    suits = ['spades', 'clubs', 'hearts', 'diamonds']  # static\n",
    "    values = ['2', '3', '4', '5', '6', '7', '8', '9', '10',\n",
    "              'jack', 'queen', 'king', 'ace']  # static\n",
    "\n",
    "    def __init__(self):\n",
    "        self.deck = []\n",
    "        for suit in self.suits:\n",
    "            for value in self.values:\n",
    "                self.deck.append({'value': value, 'suit': suit})\n",
    "\n",
    "    def shuffle(self):\n",
    "        random.shuffle(self.deck)\n",
    "\n",
    "    def draw(self):\n",
    "        if self.deck:\n",
    "            return self.deck.pop(0)\n",
    "        raise StopIteration\n",
    "\n",
    "    def describe_suits(self):\n",
    "        result = []\n",
    "        for card in self.deck:\n",
    "            result.append(card['suit'])\n",
    "        return sorted(list(set(result)))\n",
    "\n",
    "    def describe_values(self):\n",
    "        result = []\n",
    "        for card in self.deck:\n",
    "            result.append(card['value'])\n",
    "        return sorted(list(set(result)))"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Tests\n",
    "1. Create an object:"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[{'value': '2', 'suit': 'spades'},\n",
       " {'value': '3', 'suit': 'spades'},\n",
       " {'value': '4', 'suit': 'spades'},\n",
       " {'value': '5', 'suit': 'spades'},\n",
       " {'value': '6', 'suit': 'spades'},\n",
       " {'value': '7', 'suit': 'spades'},\n",
       " {'value': '8', 'suit': 'spades'},\n",
       " {'value': '9', 'suit': 'spades'},\n",
       " {'value': '10', 'suit': 'spades'},\n",
       " {'value': 'jack', 'suit': 'spades'},\n",
       " {'value': 'queen', 'suit': 'spades'},\n",
       " {'value': 'king', 'suit': 'spades'},\n",
       " {'value': 'ace', 'suit': 'spades'},\n",
       " {'value': '2', 'suit': 'clubs'},\n",
       " {'value': '3', 'suit': 'clubs'},\n",
       " {'value': '4', 'suit': 'clubs'},\n",
       " {'value': '5', 'suit': 'clubs'},\n",
       " {'value': '6', 'suit': 'clubs'},\n",
       " {'value': '7', 'suit': 'clubs'},\n",
       " {'value': '8', 'suit': 'clubs'},\n",
       " {'value': '9', 'suit': 'clubs'},\n",
       " {'value': '10', 'suit': 'clubs'},\n",
       " {'value': 'jack', 'suit': 'clubs'},\n",
       " {'value': 'queen', 'suit': 'clubs'},\n",
       " {'value': 'king', 'suit': 'clubs'},\n",
       " {'value': 'ace', 'suit': 'clubs'},\n",
       " {'value': '2', 'suit': 'hearts'},\n",
       " {'value': '3', 'suit': 'hearts'},\n",
       " {'value': '4', 'suit': 'hearts'},\n",
       " {'value': '5', 'suit': 'hearts'},\n",
       " {'value': '6', 'suit': 'hearts'},\n",
       " {'value': '7', 'suit': 'hearts'},\n",
       " {'value': '8', 'suit': 'hearts'},\n",
       " {'value': '9', 'suit': 'hearts'},\n",
       " {'value': '10', 'suit': 'hearts'},\n",
       " {'value': 'jack', 'suit': 'hearts'},\n",
       " {'value': 'queen', 'suit': 'hearts'},\n",
       " {'value': 'king', 'suit': 'hearts'},\n",
       " {'value': 'ace', 'suit': 'hearts'},\n",
       " {'value': '2', 'suit': 'diamonds'},\n",
       " {'value': '3', 'suit': 'diamonds'},\n",
       " {'value': '4', 'suit': 'diamonds'},\n",
       " {'value': '5', 'suit': 'diamonds'},\n",
       " {'value': '6', 'suit': 'diamonds'},\n",
       " {'value': '7', 'suit': 'diamonds'},\n",
       " {'value': '8', 'suit': 'diamonds'},\n",
       " {'value': '9', 'suit': 'diamonds'},\n",
       " {'value': '10', 'suit': 'diamonds'},\n",
       " {'value': 'jack', 'suit': 'diamonds'},\n",
       " {'value': 'queen', 'suit': 'diamonds'},\n",
       " {'value': 'king', 'suit': 'diamonds'},\n",
       " {'value': 'ace', 'suit': 'diamonds'}]"
      ]
     },
     "execution_count": 2,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cards = PlayingCards()\n",
    "cards.deck"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "2. Shuffle playing cards"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 3,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "[{'value': '10', 'suit': 'spades'},\n",
       " {'value': '9', 'suit': 'spades'},\n",
       " {'value': 'jack', 'suit': 'clubs'},\n",
       " {'value': 'ace', 'suit': 'diamonds'},\n",
       " {'value': '2', 'suit': 'hearts'},\n",
       " {'value': '5', 'suit': 'hearts'},\n",
       " {'value': '7', 'suit': 'clubs'},\n",
       " {'value': '4', 'suit': 'spades'},\n",
       " {'value': 'ace', 'suit': 'hearts'},\n",
       " {'value': '4', 'suit': 'diamonds'},\n",
       " {'value': 'ace', 'suit': 'spades'},\n",
       " {'value': '6', 'suit': 'clubs'},\n",
       " {'value': '6', 'suit': 'hearts'},\n",
       " {'value': '5', 'suit': 'diamonds'},\n",
       " {'value': '10', 'suit': 'diamonds'},\n",
       " {'value': '7', 'suit': 'spades'},\n",
       " {'value': '8', 'suit': 'hearts'},\n",
       " {'value': 'king', 'suit': 'spades'},\n",
       " {'value': '8', 'suit': 'spades'},\n",
       " {'value': '7', 'suit': 'hearts'},\n",
       " {'value': 'queen', 'suit': 'spades'},\n",
       " {'value': '6', 'suit': 'diamonds'},\n",
       " {'value': '9', 'suit': 'diamonds'},\n",
       " {'value': '3', 'suit': 'hearts'},\n",
       " {'value': '8', 'suit': 'clubs'},\n",
       " {'value': '5', 'suit': 'clubs'},\n",
       " {'value': 'king', 'suit': 'clubs'},\n",
       " {'value': '2', 'suit': 'diamonds'},\n",
       " {'value': '2', 'suit': 'spades'},\n",
       " {'value': '9', 'suit': 'hearts'},\n",
       " {'value': '7', 'suit': 'diamonds'},\n",
       " {'value': 'ace', 'suit': 'clubs'},\n",
       " {'value': '4', 'suit': 'hearts'},\n",
       " {'value': 'queen', 'suit': 'hearts'},\n",
       " {'value': 'jack', 'suit': 'hearts'},\n",
       " {'value': '6', 'suit': 'spades'},\n",
       " {'value': 'king', 'suit': 'diamonds'},\n",
       " {'value': '3', 'suit': 'diamonds'},\n",
       " {'value': '8', 'suit': 'diamonds'},\n",
       " {'value': '10', 'suit': 'hearts'},\n",
       " {'value': '2', 'suit': 'clubs'},\n",
       " {'value': 'jack', 'suit': 'diamonds'},\n",
       " {'value': '3', 'suit': 'clubs'},\n",
       " {'value': '4', 'suit': 'clubs'},\n",
       " {'value': '9', 'suit': 'clubs'},\n",
       " {'value': '10', 'suit': 'clubs'},\n",
       " {'value': 'queen', 'suit': 'diamonds'},\n",
       " {'value': 'queen', 'suit': 'clubs'},\n",
       " {'value': '5', 'suit': 'spades'},\n",
       " {'value': 'king', 'suit': 'hearts'},\n",
       " {'value': '3', 'suit': 'spades'},\n",
       " {'value': 'jack', 'suit': 'spades'}]"
      ]
     },
     "execution_count": 3,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cards.shuffle()\n",
    "cards.deck"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "3. Draw card (take the card at the top of the deck of cards)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "{'value': '10', 'suit': 'spades'}"
      ]
     },
     "execution_count": 4,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "card = cards.draw()\n",
    "card"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "4. See suits (extra)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['spades', 'clubs', 'hearts', 'diamonds']"
      ]
     },
     "execution_count": 5,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "PlayingCards.suits  # ['spades', 'clubs', 'hearts', 'diamonds']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 6,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['spades', 'clubs', 'hearts', 'diamonds']"
      ]
     },
     "execution_count": 6,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cards.suits  # ['spades', 'clubs', 'hearts', 'diamonds']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 7,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['clubs', 'diamonds', 'hearts', 'spades']"
      ]
     },
     "execution_count": 7,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cards.describe_suits()  # only suits availbale in current deck"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "5. See values (extra)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 8,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['2', '3', '4', '5', '6', '7', '8', '9', '10', 'jack', 'queen', 'king', 'ace']"
      ]
     },
     "execution_count": 8,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "PlayingCards.values  # ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'jack', 'queen', 'king', 'ace']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 9,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['2', '3', '4', '5', '6', '7', '8', '9', '10', 'jack', 'queen', 'king', 'ace']"
      ]
     },
     "execution_count": 9,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cards.values  # ['2', '3', '4', '5', '6', '7', '8', '9', '10', 'jack', 'queen', 'king', 'ace']"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 10,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "['10', '2', '3', '4', '5', '6', '7', '8', '9', 'ace', 'jack', 'king', 'queen']"
      ]
     },
     "execution_count": 10,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "cards.describe_values()  # only availbale suits"
   ]
  }
 ],
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