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First solution in Clear category for The Angles of a Triangle by beiguanzhe
from typing import List
import math
def checkio(a: int, b: int, c: int) -> List[int]:
s = [c,a,b,c,a]
if not a+b>c:
return [0,0,0]
return sorted([round(math.degrees(math.acos((s[x-1]**2+s[x+1]**2-s[x]**2)/2/s[x-1]/s[x+1]))) for x in range(1,4)])
#These "asserts" using only for self-checking and not necessary for auto-testing
if __name__ == '__main__':
print("Example:")
print(checkio(4, 4, 4))
assert checkio(4, 4, 4) == [60, 60, 60], "All sides are equal"
assert checkio(3, 4, 5) == [37, 53, 90], "Egyptian triangle"
assert checkio(2, 2, 5) == [0, 0, 0], "It's can not be a triangle"
print("Coding complete? Click 'Check' to earn cool rewards!")
Dec. 26, 2018