3024. Type of Triangle II

You are given a 0-indexed integer array nums of size 3 which can form the sides of a triangle.

• A triangle is called equilateral if it has all sides of equal length.
• A triangle is called isosceles if it has exactly two sides of equal length.
• A triangle is called scalene if all its sides are of different lengths.

Return a string representing the type of triangle that can be formed or "none" if it cannot form a triangle.

class Solution {
public:
    string triangleType(vector<int>& A) {
        sort(begin(A), end(A));
        if(A[0] == A[2]) return "equilateral";
        if(A[0] + A[1] <= A[2]) return "none";
        if(A[0] == A[1]) return "isosceles";
        if(A[1] == A[2]) return "isosceles";
        return "scalene";
    }
};