Contents

package triangle

import "math"

type Kind string

const (
	Equ Kind = "equilateral"
	Iso      = "isosceles"
	Sca      = "scalene"
	NaT      = "not a triangle"
)

func KindFromSides(a, b, c float64) Kind {
	if math.IsNaN(a) || math.IsNaN(b) || math.IsNaN(c) {
		return NaT
	}
	if a > b {
		a, b = b, a
	}
	if b > c {
		b, c = c, b
	}
	if a > b {
		a, b = b, a
	}
	// sides are now sorted
	switch {
	case math.IsInf(c, 1): // largest side is +Inf, guards against (3, +Inf, +Inf)
		return NaT
	case a <= 0:
		return NaT
	case a+b < c: // triangle inequality
		return NaT
	case a == c:
		return Equ
	case a == b || b == c:
		return Iso
	}
	return Sca
}

Version data entries

122 entries across 122 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/go/exercises/triangle/example.go
trackler-2.2.1.179	tracks/go/exercises/triangle/example.go
trackler-2.2.1.178	tracks/go/exercises/triangle/example.go
trackler-2.2.1.177	tracks/go/exercises/triangle/example.go
trackler-2.2.1.176	tracks/go/exercises/triangle/example.go
trackler-2.2.1.175	tracks/go/exercises/triangle/example.go
trackler-2.2.1.174	tracks/go/exercises/triangle/example.go
trackler-2.2.1.173	tracks/go/exercises/triangle/example.go
trackler-2.2.1.172	tracks/go/exercises/triangle/example.go
trackler-2.2.1.171	tracks/go/exercises/triangle/example.go
trackler-2.2.1.170	tracks/go/exercises/triangle/example.go
trackler-2.2.1.169	tracks/go/exercises/triangle/example.go
trackler-2.2.1.167	tracks/go/exercises/triangle/example.go
trackler-2.2.1.166	tracks/go/exercises/triangle/example.go
trackler-2.2.1.165	tracks/go/exercises/triangle/example.go
trackler-2.2.1.164	tracks/go/exercises/triangle/example.go
trackler-2.2.1.163	tracks/go/exercises/triangle/example.go
trackler-2.2.1.162	tracks/go/exercises/triangle/example.go
trackler-2.2.1.161	tracks/go/exercises/triangle/example.go
trackler-2.2.1.160	tracks/go/exercises/triangle/example.go