updated coding challenges

Author: sonik8494

Coding challenges/Day_1.ipynb …ing Challenges/Day_1_Python Warmup.ipynbCoding challenges/Day_1.ipynb renamed to Coding Challenges/Day_1_Python Warmup.ipynb Coding challenges/Day_1.ipynb renamed to Coding Challenges/Day_1_Python Warmup.ipynb

@@ -350,12 +350,105 @@
     "* Print the first three days of the week"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Loops\n",
+    "\n",
+    "Loops are a way to repeatedly execute some code. Here's an example:\n"
+   ]
+  },
   {
    "cell_type": "code",
    "execution_count": null,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "planets = ['Mercury', 'Venus', 'Earth', 'Mars', 'Jupiter', 'Saturn', 'Uranus', 'Neptune']\n",
+    "for planet in planets:\n",
+    "    print(planet, end=' ') # print all on same line\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "The for loop specifies\n",
+    "\n",
+    "   * the variable name to use (in this case, planet)\n",
+    "   \n",
+    "   * the set of values to loop over (in this case, planets)\n",
+    "\n",
+    "You use the word \"in\" to link them together.\n",
+    "\n",
+    "The object to the right of the \"in\" can be any object that supports iteration. Basically, if it can be thought of as a group of things, you can probably loop over it. In addition to lists, we can iterate over the elements of a tuple:\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "multiplicands = [2, 2, 2, 3, 3, 5]\n",
+    "product = 1\n",
+    "for mult in multiplicands:\n",
+    "    product = product * mult\n",
+    "product\n"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "\n",
+    "You can even loop through each character in a string:\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "s = 'steganograpHy is the practicE of conceaLing a file, message, image, or video within another fiLe, message, image, Or video.'\n",
+    "msg = ''\n",
+    "# print all the uppercase letters in s, one at a time\n",
+    "for char in s:\n",
+    "    if char.isupper():\n",
+    "        print(char, end='')    "
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Do it yourself\n",
+    "\n",
+    "## Task 1\n",
+    "\n",
+    "* Create a list of all the 7 days of the weeks and store it in the variable `weekdays`.\n",
+    "\n",
+    "* Iterate through the first 5 days of the week stored in the variable `weekdays` and print them.\n",
+    "\n",
+    "\n",
+    "\n",
+    "## Task 2\n",
+    "\n",
+    "* Iterate the elements in the list defined below, divide each number by 5 and print quotient for each of the element.\n",
+    "\n",
+    "elements = [10,20,30,40,50]\n"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# write the code here\n"
+   ]
   }
  ],
  "metadata": {
@@ -374,7 +467,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.6"
+   "version": "3.7.4"
   }
  },
  "nbformat": 4,