In [1]:
# Versão da Linguagem Python
from platform import python_version
print('Versão da Linguagem Python Usada Neste Jupyter Notebook:', python_version())
In [2]:
class SelectionSort(object):
def sort(self, data):
if data is None:
raise TypeError('Dados não podem ser None')
if len(data) < 2:
return data
for i in range(len(data) - 1):
min_index = i
for j in range(i + 1, len(data)):
if data[j] < data[min_index]:
min_index = j
if data[min_index] < data[i]:
data[i], data[min_index] = data[min_index], data[i]
return data
def sort_iterative_alt(self, data):
if data is None:
raise TypeError('Dados não podem ser None')
if len(data) < 2:
return data
for i in range(len(data) - 1):
self._swap(data, i, self._find_min_index(data, i))
return data
def sort_recursive(self, data):
if data is None:
raise TypeError('Dados não podem ser None')
if len(data) < 2:
return data
return self._sort_recursive(data, start=0)
def _sort_recursive(self, data, start):
if data is None:
return
if start < len(data) - 1:
swap(data, start, self._find_min_index(data, start))
self._sort_recursive(data, start + 1)
return data
def _find_min_index(self, data, start):
min_index = start
for i in range(start + 1, len(data)):
if data[i] < data[min_index]:
min_index = i
return min_index
def _swap(self, data, i, j):
if i != j:
data[i], data[j] = data[j], data[i]
return data
In [3]:
%%writefile missao4.py
from nose.tools import assert_equal, assert_raises
class TestSelectionSort(object):
def test_selection_sort(self, func):
print('None input')
assert_raises(TypeError, func, None)
print('Input vazio')
assert_equal(func([]), [])
print('Um elemento')
assert_equal(func([5]), [5])
print('Dois ou mais elementos')
data = [5, 1, 7, 2, 6, -3, 5, 7, -10]
assert_equal(func(data), sorted(data))
print('Sua solução foi executada com sucesso! Parabéns!')
def main():
test = TestSelectionSort()
try:
selection_sort = SelectionSort()
test.test_selection_sort(selection_sort.sort)
except NameError:
pass
if __name__ == '__main__':
main()
In [4]:
%run -i missao4.py