Enable Javascript in your browser and then refresh this page, for a much enhanced experience.
First solution in Clear category for Skew-symmetric Matrix by MBM_1607
def checkio(matrix):
new = [[y*-1 for y in x] for x in matrix]
new = [list(x) for x in zip(*new)]
if new == matrix:
return True
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"
Jan. 25, 2018