merge silvia nicolau with prework

1.-Python/1.-Snail-and-Well/snail-and-well.ipynb

@@ -30,10 +30,15 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 2,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "well_height = 125\n",
+    "daily_distance = 30\n",
+    "nightly_distance = -20\n",
+    "snail_position = 0"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -44,10 +49,12 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 3,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "days = 0"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -58,10 +65,16 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 4,
    "metadata": {},
    "outputs": [],
-   "source": []
+   "source": [
+    "while snail_position <= well_height :\n",
+    "    snail_position += daily_distance\n",
+    "    if snail_position <= well_height :\n",
+    "        snail_position += nightly_distance\n",
+    "    days = days + 1"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -72,10 +85,20 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 5,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Days = 11\n"
+     ]
+    }
+   ],
+   "source": [
+    "print(\"Days =\", days)"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -96,10 +119,30 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 6,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Days = 6\n"
+     ]
+    }
+   ],
+   "source": [
+    "advance_cm = [30, 21, 33, 77, 44, 45, 23, 45, 12, 34, 55]\n",
+    "snail_position = 0\n",
+    "days = 0\n",
+    "\n",
+    "while snail_position <= well_height :\n",
+    "    snail_position += advance_cm[days]\n",
+    "    if snail_position <= well_height :\n",
+    "        snail_position += nightly_distance\n",
+    "    days = days + 1\n",
+    "\n",
+    "print(\"Days =\", days)"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -111,10 +154,32 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 10,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Max displacement = 57\n",
+      "Min displacement = 1\n"
+     ]
+    }
+   ],
+   "source": [
+    "advance_cm = [30, 21, 33, 77, 44, 45, 23, 45, 12, 34, 55]\n",
+    "snail_position = 0\n",
+    "days = 0\n",
+    "displacement = []\n",
+    "\n",
+    "while snail_position <= well_height :\n",
+    "    snail_position += advance_cm[days] + nightly_distance\n",
+    "    displacement.append(advance_cm[days] + nightly_distance)\n",
+    "    days = days + 1\n",
+    "\n",
+    "print(\"Max displacement =\", max(displacement))\n",
+    "print(\"Min displacement =\", min(displacement))"
+   ]
   },
   {
    "cell_type": "markdown",
@@ -125,18 +190,71 @@
   },
   {
    "cell_type": "code",
-   "execution_count": null,
+   "execution_count": 15,
    "metadata": {},
-   "outputs": [],
-   "source": []
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Average displacement = 21.666666666666668\n",
+      "Average displacement = 21.666666666666668\n"
+     ]
+    }
+   ],
+   "source": [
+    "import numpy\n",
+    "average = numpy.mean(displacement)\n",
+    "print(\"Average displacement =\", average)\n",
+    "\n",
+    "import statistics\n",
+    "average2 = statistics.mean(displacement)\n",
+    "print(\"Average displacement =\", average2)"
+   ]
   },
   {
    "cell_type": "markdown",
    "metadata": {},
    "source": [
-    "#### 4. What is the standard deviation of its displacement? Take into account the snail slides at night."
+    "4. What is the standard deviation of its displacement? Take into account the snail slides at night."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 16,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Standard deviation = 17.81073334319006\n",
+      "Standard deviation = 17.81073334319006\n"
+     ]
+    }
+   ],
+   "source": [
+    "std_dev = numpy.std(displacement)\n",
+    "print(\"Standard deviation =\", std_dev)\n",
+    "\n",
+    "std_dev2 = statistics.pstdev(displacement)\n",
+    "print(\"Standard deviation =\", std_dev2)"
    ]
   },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  },
   {
    "cell_type": "code",
    "execution_count": null,
@@ -161,7 +279,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.2"
+   "version": "3.7.4"
   }
  },
  "nbformat": 4,