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2for loops and 1if solution in Clear category for Skew-symmetric Matrix by suitch1982
def checkio(matrix):
for i in range(len(matrix)):
for n in range(len(matrix)):
if i==n and matrix[i][n]!=0 or matrix[i][n]+matrix[n][i]!=0:
return False
return True
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
print("Example:")
print(checkio([
[0, 1, 2],
[-1, 0, 1],
[-2, -1, 0]]))
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"
print("Coding complete? Click 'Check' to earn cool rewards!");
June 7, 2019
