Calculate the Third Angle of a Triangle in Go

The challenge

You are given two interior angles (in degrees) of a triangle.

Write a function to return the 3rd.

Note: only positive integers will be tested.

The solution in Golang

Option 1:

package solution func OtherAngle(a int, b int) int { return 180-a-b }
Code language: Go (go)

Option 2:

package solution func OtherAngle(a int, b int) int { if a + b > 180{ return -1 } return 180 - a - b }
Code language: Go (go)

Option 3:

package solution import "math" func OtherAngle(a int, b int) int { const fullNumber = 180 var thirdNumber int = int(float64(fullNumber) - (math.Abs(float64(a)) + math.Abs(float64(b)))) return thirdNumber }
Code language: Go (go)

Test cases to validate our solution

package test import ( . "github.com/onsi/ginkgo" . "github.com/onsi/gomega" . "my/<meta charset="utf-8">solution" ) var _ = Describe("Basic Tests", func() { It("OtherAngle(30, 60)", func() { Expect(OtherAngle(30, 60)).To(Equal(90)) }) It("OtherAngle(60, 60)", func() { Expect(OtherAngle(60, 60)).To(Equal(60)) }) It("OtherAngle(43, 78)", func() { Expect(OtherAngle(43, 78)).To(Equal(59)) }) It("OtherAngle(10, 20)", func() { Expect(OtherAngle(10, 20)).To(Equal(150)) }) })
Code language: Go (go)
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Herbert Breitenberg
2 months ago