From cf48629858e7c6bff93d3a205481aaefc620bcda Mon Sep 17 00:00:00 2001
From: Donne Martin <donne.martin@gmail.com>
Date: Sat, 4 Feb 2017 19:07:06 -0500
Subject: [PATCH] Move xor challenge solution to a class (#143)

---
 .../maximizing_xor_challenge.ipynb            | 21 +++++++------
 .../maximizing_xor_solution.ipynb             | 31 ++++++++++---------
 .../maximizing_xor/test_maximizing_xor.py     |  3 +-
 3 files changed, 31 insertions(+), 24 deletions(-)

diff --git a/online_judges/maximizing_xor/maximizing_xor_challenge.ipynb b/online_judges/maximizing_xor/maximizing_xor_challenge.ipynb
index f00d63a..1364e05 100644
--- a/online_judges/maximizing_xor/maximizing_xor_challenge.ipynb
+++ b/online_judges/maximizing_xor/maximizing_xor_challenge.ipynb
@@ -72,9 +72,11 @@
    },
    "outputs": [],
    "source": [
-    "def max_xor(lower, upper):\n",
-    "    # TODO: Implement me\n",
-    "    pass"
+    "class Solution(object):\n",
+    "\n",
+    "    def max_xor(self, lower, upper):\n",
+    "        # TODO: Implement me\n",
+    "        pass"
    ]
   },
   {
@@ -101,7 +103,8 @@
     "class TestMaximingXor(object):\n",
     "\n",
     "    def test_maximizing_xor(self):\n",
-    "        assert_equal(max_xor(10, 15), 7)\n",
+    "        solution = Solution()\n",
+    "        assert_equal(solution.max_xor(10, 15), 7)\n",
     "        print('Success: test_maximizing_xor')\n",
     "\n",
     "\n",
@@ -126,21 +129,21 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "python2"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
-   "version": "2.7.10"
+   "pygments_lexer": "ipython3",
+   "version": "3.5.0"
   }
  },
  "nbformat": 4,
diff --git a/online_judges/maximizing_xor/maximizing_xor_solution.ipynb b/online_judges/maximizing_xor/maximizing_xor_solution.ipynb
index af3da14..c9487a3 100644
--- a/online_judges/maximizing_xor/maximizing_xor_solution.ipynb
+++ b/online_judges/maximizing_xor/maximizing_xor_solution.ipynb
@@ -82,14 +82,16 @@
    },
    "outputs": [],
    "source": [
-    "def max_xor(lower, upper):\n",
-    "    result = 0\n",
-    "    for l in range(lower, upper + 1):\n",
-    "        for u in range(lower, upper + 1):\n",
-    "            curr = l ^ u\n",
-    "            if result < curr:\n",
-    "                result = curr\n",
-    "    return result"
+    "class Solution(object):\n",
+    "\n",
+    "    def max_xor(self, lower, upper):\n",
+    "        result = 0\n",
+    "        for l in range(lower, upper + 1):\n",
+    "            for u in range(lower, upper + 1):\n",
+    "                curr = l ^ u\n",
+    "                if result < curr:\n",
+    "                    result = curr\n",
+    "        return result"
    ]
   },
   {
@@ -123,7 +125,8 @@
     "class TestMaximingXor(object):\n",
     "\n",
     "    def test_maximizing_xor(self):\n",
-    "        assert_equal(max_xor(10, 15), 7)\n",
+    "        solution = Solution()\n",
+    "        assert_equal(solution.max_xor(10, 15), 7)\n",
     "        print('Success: test_maximizing_xor')\n",
     "\n",
     "\n",
@@ -158,21 +161,21 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 2",
+   "display_name": "Python 3",
    "language": "python",
-   "name": "python2"
+   "name": "python3"
   },
   "language_info": {
    "codemirror_mode": {
     "name": "ipython",
-    "version": 2
+    "version": 3
    },
    "file_extension": ".py",
    "mimetype": "text/x-python",
    "name": "python",
    "nbconvert_exporter": "python",
-   "pygments_lexer": "ipython2",
-   "version": "2.7.10"
+   "pygments_lexer": "ipython3",
+   "version": "3.5.0"
   }
  },
  "nbformat": 4,
diff --git a/online_judges/maximizing_xor/test_maximizing_xor.py b/online_judges/maximizing_xor/test_maximizing_xor.py
index c165070..4c5abc1 100644
--- a/online_judges/maximizing_xor/test_maximizing_xor.py
+++ b/online_judges/maximizing_xor/test_maximizing_xor.py
@@ -4,7 +4,8 @@ from nose.tools import assert_equal
 class TestMaximingXor(object):
 
     def test_maximizing_xor(self):
-        assert_equal(max_xor(10, 15), 7)
+        solution = Solution()
+        assert_equal(solution.max_xor(10, 15), 7)
         print('Success: test_maximizing_xor')