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First solution in Creative category for Skew-symmetric Matrix by TurboProNiszczyciel
def checkio(matrix):
for i in range(len(matrix)):
for x in range(len(matrix)):
if x==i:
if matrix[x][x]!=0:
return False
else:
if matrix[x][i]!=-matrix[i][x]:
return False
return True
#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. 18, 2017
