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Triangular solution in Clear category for Skew-symmetric Matrix by PositronicLlama
"""Test whether a matrix is skew symmetric."""
def checkio(matr):
'return whether the specified square matrix is skew-symmetric or not'
n = len(matr)
for i in range(0, n):
for j in range(i, n):
if matr[i][j] != -matr[j][i]:
return False
return True
if __name__ == '__main__':
assert checkio([[0, 1,2],
[-1,0,1],
[-2,-1,0]]) == True, 'First'
assert checkio([[0, 1,2],
[-1,1,1],
[-2,-1,0]]) == False, 'Second'
assert checkio([[0, 1,2],
[-1,0,1],
[-3,-1,0]]) == False, 'Third'
print('All ok')
Dec. 15, 2012
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