leetcode-algorithms/src/TypeOfTriangle.java at master · anishLearnsToCode/leetcode-algorithms · GitHub

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// https://leetcode.com/problems/type-of-triangle

// T: O(1)

// S: O(1)

public class TypeOfTriangle {

public String triangleType(int[] sides) {

if (!isValidTriangle(sides)) {

return "none";

}

if (sides[0] == sides[1] && sides[1] == sides[2]) {

return "equilateral";

}

if (sides[0] == sides[1] || sides[0] == sides[2] || sides[1] == sides[2]) {

return "isosceles";

}

return "scalene";

}

private static boolean isValidTriangle(int[] sides) {

return sides[0] + sides[1] > sides[2] && sides[0] + sides[2] > sides[1] && sides[1] + sides[2] > sides[0];

}

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