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Move string rotation to a class

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This commit is contained in:
Donne Martin
2016-08-13 06:40:52 -04:00
parent 1fde26fcf5
commit 14a2751862
3 changed files with 35 additions and 30 deletions
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26
arrays_strings/rotation/rotation_challenge.ipynb
View File

@@ -82,15 +82,16 @@
}, },
"outputs": [], "outputs": [],
"source": [ "source": [
"def is_substring(s1, s2):\n", "class Rotation(object):\n",
" # TODO: Implement me\n",
" pass\n",
"\n", "\n",
" def is_substring(self, s1, s2):\n",
" # TODO: Implement me\n",
" pass\n",
"\n", "\n",
"def is_rotation(s1, s2):\n", " def is_rotation(self, s1, s2):\n",
" # TODO: Implement me\n", " # TODO: Implement me\n",
" # Call is_substring only once\n", " # Call is_substring only once\n",
" pass" " pass"
] ]
}, },
{ {
@@ -124,11 +125,12 @@
"class TestRotation(object):\n", "class TestRotation(object):\n",
"\n", "\n",
" def test_rotation(self):\n", " def test_rotation(self):\n",
" assert_equal(is_rotation('o', 'oo'), False)\n", " rotation = Rotation()\n",
" assert_equal(is_rotation(None, 'foo'), False)\n", " assert_equal(rotation.is_rotation('o', 'oo'), False)\n",
" assert_equal(is_rotation('', 'foo'), False)\n", " assert_equal(rotation.is_rotation(None, 'foo'), False)\n",
" assert_equal(is_rotation('', ''), True)\n", " assert_equal(rotation.is_rotation('', 'foo'), False)\n",
" assert_equal(is_rotation('foobarbaz', 'barbazfoo'), True)\n", " assert_equal(rotation.is_rotation('', ''), True)\n",
" assert_equal(rotation.is_rotation('foobarbaz', 'barbazfoo'), True)\n",
" print('Success: test_rotation')\n", " print('Success: test_rotation')\n",
"\n", "\n",
"\n", "\n",

28
arrays_strings/rotation/rotation_solution.ipynb
View File

@@ -92,16 +92,17 @@
}, },
"outputs": [], "outputs": [],
"source": [ "source": [
"def is_substring(s1, s2):\n", "class Rotation(object):\n",
" return s1 in s2\n",
"\n", "\n",
" def is_substring(self, s1, s2):\n",
" return s1 in s2\n",
"\n", "\n",
"def is_rotation(s1, s2):\n", " def is_rotation(self, s1, s2):\n",
" if s1 is None or s2 is None:\n", " if s1 is None or s2 is None:\n",
" return False\n", " return False\n",
" if len(s1) != len(s2):\n", " if len(s1) != len(s2):\n",
" return False\n", " return False\n",
" return is_substring(s1, s2 + s2)" " return self.is_substring(s1, s2 + s2)"
] ]
}, },
{ {
@@ -134,11 +135,12 @@
"class TestRotation(object):\n", "class TestRotation(object):\n",
"\n", "\n",
" def test_rotation(self):\n", " def test_rotation(self):\n",
" assert_equal(is_rotation('o', 'oo'), False)\n", " rotation = Rotation()\n",
" assert_equal(is_rotation(None, 'foo'), False)\n", " assert_equal(rotation.is_rotation('o', 'oo'), False)\n",
" assert_equal(is_rotation('', 'foo'), False)\n", " assert_equal(rotation.is_rotation(None, 'foo'), False)\n",
" assert_equal(is_rotation('', ''), True)\n", " assert_equal(rotation.is_rotation('', 'foo'), False)\n",
" assert_equal(is_rotation('foobarbaz', 'barbazfoo'), True)\n", " assert_equal(rotation.is_rotation('', ''), True)\n",
" assert_equal(rotation.is_rotation('foobarbaz', 'barbazfoo'), True)\n",
" print('Success: test_rotation')\n", " print('Success: test_rotation')\n",
"\n", "\n",
"\n", "\n",

11
arrays_strings/rotation/test_rotation.py
View File

@@ -4,11 +4,12 @@ from nose.tools import assert_equal
class TestRotation(object): class TestRotation(object):
def test_rotation(self): def test_rotation(self):
assert_equal(is_rotation('o', 'oo'), False) rotation = Rotation()
assert_equal(is_rotation(None, 'foo'), False) assert_equal(rotation.is_rotation('o', 'oo'), False)
assert_equal(is_rotation('', 'foo'), False) assert_equal(rotation.is_rotation(None, 'foo'), False)
assert_equal(is_rotation('', ''), True) assert_equal(rotation.is_rotation('', 'foo'), False)
assert_equal(is_rotation('foobarbaz', 'barbazfoo'), True) assert_equal(rotation.is_rotation('', ''), True)
assert_equal(rotation.is_rotation('foobarbaz', 'barbazfoo'), True)
print('Success: test_rotation') print('Success: test_rotation')