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First solution in Clear category for Skew-symmetric Matrix by m.dziardziel
def checkio(matrix):
for a in range(0,len(matrix)):
for b in range(0,len(matrix)):
if a==b:
if matrix[a][b]!=0:
return False
continue
if matrix[a][b]!=matrix[b][a]*(-1):
return False
return True
return True or 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"
Dec. 2, 2016
