/
matrix.py
49 lines (46 loc) · 1.52 KB
/
matrix.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
#!/usr/bin/env python3.4
#
# matrix.py
#
# Copyright 2015 Antônio Sérgio Garcia Ferreira <antoniosergio@mail.com>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
# 2015/09/30 12:27:50
#
# ---
#
def msum(*matrices):
'''Soma matrizes de duas dimensões'''
head, *tail = matrices
for matrix in tail:
for x,row in enumerate(matrix):
for y,col in enumerate(row):
head[x][y] += col
return head
def sort(lst, pos=0, reverse=False):
'''
Exercício - Python para desenvolvedores
Recebe uma lista de dupla dimensão (matriz) e ordena pela posição especificada
no argumento pos. Se for omitido a list será ordenada com base no primeiro item
(pos 0).
'''
if not isinstance(lst,list) or not lst or pos>len(lst[0])-1:
return None
def _key(x):
return x[pos]
lst.sort(key=_key, reverse=reverse)
return lst