Sha256: 02684bfc12844999e517740638b5733c7f7cd051d4d123c21315e753995cd90c
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Versions: 138
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Stored size: 1.95 KB
Contents
using System;
using System.Linq;
public enum TriangleKind
{
Equilateral,
Isosceles,
Scalene,
Invalid
}
public static class Triangle
{
public static bool IsScalene(double side1, double side2, double side3)
{
return Kind(side1, side2, side3) == TriangleKind.Scalene;
}
public static bool IsIsosceles(double side1, double side2, double side3)
{
var triangle = Kind(side1, side2, side3);
return triangle == TriangleKind.Isosceles || triangle == TriangleKind.Equilateral;
}
public static bool IsEquilateral(double side1, double side2, double side3)
{
return Kind(side1, side2, side3) == TriangleKind.Equilateral;
}
private static TriangleKind Kind(double side1, double side2, double side3)
{
if (AllSidesAreZero(side1, side2, side3) ||
HasImpossibleSides(side1, side2, side3) ||
ViolatesTriangleInequality(side1, side2, side3))
{
return TriangleKind.Invalid;
}
int uniqueSides = UniqueSides(side1, side2, side3);
if (uniqueSides == 1)
return TriangleKind.Equilateral;
if (uniqueSides == 2)
return TriangleKind.Isosceles;
return TriangleKind.Scalene;
}
private static bool AllSidesAreZero(double side1, double side2, double side3)
{
return side1 == 0 && side2 == 0 && side3 == 0;
}
private static bool HasImpossibleSides(double side1, double side2, double side3)
{
return side1 < 0 || side2 < 0 || side3 < 0;
}
private static bool ViolatesTriangleInequality(double side1, double side2, double side3)
{
return side1 + side2 <= side3 || side1 + side3 <= side2 || side2 + side3 <= side1;
}
private static int UniqueSides(double side1, double side2, double side3)
{
double[] sides = { side1, side2, side3 };
return sides.Distinct().Count();
}
}
public class TriangleException : Exception { }
Version data entries
138 entries across 138 versions & 1 rubygems