Add code for generating lists of even and odd numbers without using loops

Author: manavcodaty

Python_Class.ipynb

@@ -1351,6 +1351,113 @@
     "    ls.remove(9)\n",
     "print(ls)"
    ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 3,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[6, 5, 4, 3]"
+      ]
+     },
+     "execution_count": 3,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "lst = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]\n",
+    "lst[5:1:-1]\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[3, 4, 5, 6]"
+      ]
+     },
+     "execution_count": 2,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "lst = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]\n",
+    "lst[2:6]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[10, 9, 8, 7, 6, 5, 4, 3, 2, 1]"
+      ]
+     },
+     "execution_count": 6,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "lst = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]\n",
+    "lst[::-1]"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "\n",
+    "generate list of 0-20\n",
+    "generate another list were all even numbers are in ascending order \n",
+    "generate another list from the parent list were all odd numbers are in descending order\n",
+    "CANNOT USE LOOPS\n",
+    "Use splicing to make the lists except the list of 0-20\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 12,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "[0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]\n",
+      "[0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20]\n",
+      "[20, 18, 16, 14, 12, 10, 8, 6, 4, 2]\n",
+      "[0, 2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 20, 18, 16, 14, 12, 10, 8, 6, 4, 2]\n"
+     ]
+    }
+   ],
+   "source": [
+    "\n",
+    "numbers = list(range(21))\n",
+    "evens = numbers[::2]\n",
+    "odds = numbers[20:0:-2]\n",
+    "\n",
+    "final_list = evens + odds\n",
+    "\n",
+    "\n",
+    "\n",
+    "print(numbers)\n",
+    "print(evens)\n",
+    "print(odds)\n",
+    "print(final_list)\n"
+   ]
   }
  ],
  "metadata": {