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Second solution in Speedy category for Skew-symmetric Matrix by Sim0000
def checkio(matrix):
return all(matrix[i][j] == -matrix[j][i] for i in range(len(matrix)) for j in range(i + 1))
#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"
Feb. 17, 2014
