doors.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import matplotlib.pyplot as plt"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "drzwi - 0, 1, 2  \n",
    "bez straty na ogolnosci mozemy zalozyc, ze wybieramy drzwi 0, a prowadzacy odslania w pierwszej rundzie\n",
    "drzwi 1, jesli sa puste i 2 w przeciwnym przypadku"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 25,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "stay strategy: 333329\n",
      "change strategy: 666671\n"
     ]
    }
   ],
   "source": [
    "stayResult = 0 # pozostajemy przy tych samych drzwiach\n",
    "changeResult = 0 # pozostajemy przy tych samych drzwiach\n",
    "N = 1000000 # ilosc prob \n",
    "stayDoor = 0\n",
    "for i in range(N):\n",
    "    prizeDoor = np.random.randint(3)\n",
    "    if prizeDoor == 1: # prowadzacy odslonil 2\n",
    "        changeDoor = 1\n",
    "    else: # prowadzacy odslonil 1\n",
    "        changeDoor = 2\n",
    "    if prizeDoor == stayDoor:\n",
    "        stayResult += 1\n",
    "    if prizeDoor == changeDoor:\n",
    "        changeResult += 1\n",
    "\n",
    "print('stay strategy: %d\\nchange strategy: %d' % (stayResult, changeResult))"
   ]
  }
 ],
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