Cyphers.ipynb

{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 2,
   "metadata": {},
   "outputs": [],
   "source": [
    "import numpy as np\n",
    "import matplotlib.pyplot as plt\n",
    "%matplotlib inline"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 4,
   "metadata": {},
   "outputs": [],
   "source": [
    "# Ref: http://code.activestate.com/recipes/578407-simple-morse-code-translator-in-python/\n",
    "MORSE_ENC = {'A': '.-',     'B': '-...',   'C': '-.-.', \n",
    "        'D': '-..',    'E': '.',      'F': '..-.',\n",
    "        'G': '--.',    'H': '....',   'I': '..',\n",
    "        'J': '.---',   'K': '-.-',    'L': '.-..',\n",
    "        'M': '--',     'N': '-.',     'O': '---',\n",
    "        'P': '.--.',   'Q': '--.-',   'R': '.-.',\n",
    "        'S': '...',    'T': '-',      'U': '..-',\n",
    "        'V': '...-',   'W': '.--',    'X': '-..-',\n",
    "        'Y': '-.--',   'Z': '--..',\n",
    "        \n",
    "        '0': '-----',  '1': '.----',  '2': '..---',\n",
    "        '3': '...--',  '4': '....-',  '5': '.....',\n",
    "        '6': '-....',  '7': '--...',  '8': '---..',\n",
    "        '9': '----.',\n",
    "         \n",
    "        ' ':'/', '.':'.-.-.-', ',':'--..--',\n",
    "        ':':'---...', '?':'..--..', \"'\":'.----.',\n",
    "        '-':'-....-', '/':'-..-.', '@': '.--.-.',\n",
    "        '=':'-...-', '(':'-.--.', ')':'-.--.-',\n",
    "        '+':'.-.-.'\n",
    "        }\n",
    "MORSE_DEC = {v:k for k,v in MORSE_ENC.items()}\n",
    "def encode(msg, map_fn):\n",
    "    return [map_fn(c) for c in msg]\n",
    "\n",
    "def decode(msg, map_fn):\n",
    "    return [map_fn(c) for c in msg]"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "Encoded : .... . .-.. .-.. --- / .-.-.\n"
     ]
    }
   ],
   "source": [
    "msg = \"hello +\"\n",
    "enc_msg = encode(msg, lambda c: MORSE_ENC[c.upper()])\n",
    "print(\"Encoded :\", \" \".join(enc_msg))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 19,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "HELLO +\n"
     ]
    }
   ],
   "source": [
    "print(\"\".join(decode(enc_msg, lambda c: MORSE_DEC[c.upper()])))"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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