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First solution in 3rd party category for Skew-symmetric Matrix by nbaramichai
import numpy as np
def checkio(matrix):
a = np.array(matrix)
b = a.transpose() * -1
if np.array_equal(a, b):
return True
return False
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
assert checkio([
[0, 1, 2],
[-1, 0, 1],
[-2, -1, 0]]) == True, "1st example"
assert checkio([
[0, 1, 2],
[-1, 1, 1],
[-2, -1, 0]]) == False, "2nd example"
assert checkio([
[0, 1, 2],
[-1, 0, 1],
[-3, -1, 0]]) == False, "3rd example"
July 5, 2016
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