Type of Triangle II — Python

# Time:  O(1)
# Space: O(1)

# math
class Solution(object):
    def triangleType(self, nums):
        """
        :type nums: List[int]
        :rtype: str
        """
        nums.sort()
        a, b, c = nums
        if a+b <= c:
            return "none"
        if a == b == c:
            return "equilateral"
        if a == b or b == c:
            return "isosceles"
        return "scalene"