I'm trying to get the diagonal from a matrix in Python without using numpy
(I really can't use it). Does someone here knows how to do it?
Example of what I want to get:
get_diagonal ([[1,2,3,4],[5,6,7,8],[9,10,11,12]], 1, 1, 1)
Result: [1, 6, 11]
Or like:
get_diagonal ([[1,2,3,4],[5,6,7,8],[9,10,11,12]], 1, 2, 1)
Result: [2, 7, 12]
Until know I've tried a lot of stuff but doesn't work.
def obter_diagonal(matrix, line, column, direc):
d = []
if direc == 1:
for i in matrix:
for j in i:
if all(i == line, j == column):
d.extend(matrix[i][j])
else:
for i in matrix:
for j in i:
d.extend[len(matrix)-1-i][j]
return d
If direc==1
I need to get the diagonal that goes from left-> right, top-> bottom.
If direc==-1
need to get the diag that goes from right-> left, top->bottom.
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