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First solution in Clear category for Skew-symmetric Matrix by Degusto
def checkio(matrix):
value = 0
for i in range(len(matrix)):
for j in range(len(matrix)):
if -matrix[i][j] != matrix[j][i]:
return False
if i == j:
value += matrix[i][j]
return value / len(matrix) == matrix[0][0]
#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"
Nov. 18, 2015
