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-2.2.1.139	tracks/go/exercises/triangle/example.go
trackler-2.2.1.138	tracks/go/exercises/triangle/example.go
trackler-2.2.1.137	tracks/go/exercises/triangle/example.go
trackler-2.2.1.136	tracks/go/exercises/triangle/example.go
trackler-2.2.1.135	tracks/go/exercises/triangle/example.go
trackler-2.2.1.134	tracks/go/exercises/triangle/example.go
trackler-2.2.1.133	tracks/go/exercises/triangle/example.go
trackler-2.2.1.132	tracks/go/exercises/triangle/example.go
trackler-2.2.1.131	tracks/go/exercises/triangle/example.go
trackler-2.2.1.130	tracks/go/exercises/triangle/example.go
trackler-2.2.1.129	tracks/go/exercises/triangle/example.go
trackler-2.2.1.128	tracks/go/exercises/triangle/example.go
trackler-2.2.1.127	tracks/go/exercises/triangle/example.go
trackler-2.2.1.126	tracks/go/exercises/triangle/example.go
trackler-2.2.1.125	tracks/go/exercises/triangle/example.go
trackler-2.2.1.124	tracks/go/exercises/triangle/example.go
trackler-2.2.1.123	tracks/go/exercises/triangle/example.go
trackler-2.2.1.122	tracks/go/exercises/triangle/example.go
trackler-2.2.1.121	tracks/go/exercises/triangle/example.go
trackler-2.2.1.120	tracks/go/exercises/triangle/example.go