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Sorting Algorithms/Bubble Sort.ipynb

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+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "# Bubble Sort\n",
+    "© 2021, Joe James"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 2,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "def bubble_sort1(A):\n",
+    "    for i in range (0, len(A) - 1):\n",
+    "        for j in range (0, len(A) - i - 1):\n",
+    "            if A[j] > A[j+1]:\n",
+    "                A[j], A[j+1] = A[j+1], A[j]"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 6,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# optimized to exit if no swaps occur       \n",
+    "def bubble_sort2(A):\n",
+    "    for i in range (0, len(A) - 1):\n",
+    "        done = True\n",
+    "        for j in range (0, len(A) - i - 1):\n",
+    "            if A[j] > A[j+1]:\n",
+    "                A[j], A[j+1] = A[j+1], A[j]\n",
+    "                done = False\n",
+    "        if done:\n",
+    "            return"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "### Test Function\n",
+    "Set a result flag. The j loop is used to perform 1000 test iterations. The next two lines create and shuffle list A of 100 integers. Then A is passed to our sorting function. The sorted result is compared to a sort using Python's sorted function. After 1000 iterations of the test, the result is printed."
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 7,
+   "metadata": {},
+   "outputs": [
+    {
+     "name": "stdout",
+     "output_type": "stream",
+     "text": [
+      "Success\n",
+      "Success\n"
+     ]
+    }
+   ],
+   "source": [
+    "import random\n",
+    "\n",
+    "def test(func):\n",
+    "    result = 'Success'\n",
+    "    for j in range(1000):\n",
+    "        A = [k for k in range(100)]\n",
+    "        random.shuffle(A)\n",
+    "        func(A)\n",
+    "        if A != sorted(A):\n",
+    "            result = 'Failed'\n",
+    "    print(result)\n",
+    "test(bubble_sort1)\n",
+    "test(bubble_sort2)"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": []
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "Python 3",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.7.0"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}