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First solution in Clear category for Skew-symmetric Matrix by Chramar
import numpy
def checkio(matrix):
A=numpy.asarray(matrix)
if (A.transpose() == -A).all():
return True
else:
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"
Nov. 1, 2016
