{
 "cells": [
  {
   "cell_type": "code",
   "execution_count": 5,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "0 EVEN\n",
      "1 ODD\n",
      "2 EVEN\n",
      "3 ODD\n"
     ]
    }
   ],
   "source": [
    "#4: Write a function called showNumbers that takes a parameter called limit. \n",
    "#It should print all the numbers between 0 and limit with a label to identify the even and odd numbers. \n",
    "#For example, if the limit is 3, it should print:\n",
    "#0 EVEN\n",
    "#1 ODD\n",
    "#2 EVEN\n",
    "#3 ODD\n",
    "\n",
    "def showNumbers(limit):\n",
    "    for x in range(limit+1):\n",
    "        if x%2 == 0:\n",
    "            print(x,\"EVEN\")\n",
    "        else:\n",
    "            print(x,\"ODD\")\n",
    "\n",
    "showNumbers(3)\n",
    "#if C1:\n",
    "#     ???\n",
    "#elif C2:\n",
    "#    ???\n",
    "#elif C3:\n",
    "#    ???\n",
    "#\n",
    "#else:\n",
    "#    ???"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "x = 12\n",
    "x%2 == 0"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": [
    "import string\n",
    "\n",
    "def encrypt(s):\n",
    "    # this function returns the encrypted form of s\n",
    "    # s = \"14:00/the ships are in position\"\n",
    "    key = int(s[0:2])\n",
    "    k = s.index('/')\n",
    "    plain = s[k+1:]\n",
    "    init_string = s[0:k+1]\n",
    "    #Strategy 1:\n",
    "    for c in plain:\n",
    "        ???\n",
    "    \n",
    "    #Strategy 2:\n",
    "    for word in plain.split():\n",
    "        ???\n",
    "    \n",
    "    \n",
    "    return answer\n",
    "    # answer = \"14:00/7,21,18_6,21,22,3,6_14,5,18_22,1_3,2,6,22,7,22,2,1\"\n",
    "\n",
    "\n",
    "###SLICE-DICE-STITCH STRINGS!!!!\n",
    "    \n",
    "    \n",
    "    \n",
    "    \n",
    "def decrypt(s):\n",
    "  # this function returns the decrypted form of s\n",
    "  ???\n",
    "\n",
    "def main():\n",
    "    #s = \"14:00/the ships are in position\"\n",
    "    #s = \"21:30/17,25_21,12,25_12,25,21,24,19_14,9_21,14,14,21,23,5\"\n",
    "    while True:\n",
    "        s = input(\"\\nEnter e plain-text or d coded-text or q: \")\n",
    "        if s[0] == \"e\":\n",
    "            print(\"Encrypted text is: \"+encrypt(s[2:]))\n",
    "        elif s[0] == \"d\":\n",
    "            print(\"Decrypted text is: \"+decrypt(s[2:])) \n",
    "        elif s[0] == \"q\":\n",
    "            break\n",
    "        else:\n",
    "            print(\"Invalid choice\")\n",
    "\n",
    "main()"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 11,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "'344'"
      ]
     },
     "execution_count": 11,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "s = \"14:00/the ships are in position\"\n",
    "int(s[0:2])\n",
    "str(344)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 21,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "namaste\n",
      "howdy\n",
      "howdy/namaste\n"
     ]
    }
   ],
   "source": [
    "s = \"namaste/howdy\"\n",
    "k = s.index(\"/\")\n",
    "fw = s[0:k]\n",
    "sw = s[k+1:]\n",
    "nw = s[k+1:] + '/' + s[0:k]\n",
    "print(fw)\n",
    "print(sw)\n",
    "print(nw)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 14,
   "metadata": {},
   "outputs": [
    {
     "data": {
      "text/plain": [
       "2"
      ]
     },
     "execution_count": 14,
     "metadata": {},
     "output_type": "execute_result"
    }
   ],
   "source": [
    "xs = [10,20,30,40,50,60]\n",
    "xs.index(30)"
   ]
  },
  {
   "cell_type": "raw",
   "metadata": {},
   "source": [
    "2 strategies:\n",
    "    \n",
    "    encrypt one letter at a time\n",
    "    encrypt one word at a time"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 22,
   "metadata": {},
   "outputs": [
    {
     "name": "stdout",
     "output_type": "stream",
     "text": [
      "['the', 'ships', 'are', 'in', 'position']\n"
     ]
    }
   ],
   "source": [
    "x = \"the ships are in position\".split()\n",
    "print(x)"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {},
   "outputs": [],
   "source": []
  }
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