The way to Reverse Kind Integers in Go

The problem

The 2 oldest ages perform/methodology must be accomplished. It ought to take an array of numbers as its argument and return the two highest numbers throughout the array. The returned worth ought to be an array within the format [second oldest age, oldest age].

The order of the numbers handed in might be any order. The array will all the time embrace at the very least 2 gadgets. If there are two or extra oldest age, then return each of them in array format.

For instance:

TwoOldestAges([]int{1, 5, 87, 45, 8, 8}) // ought to return [2]int{45, 87}

The answer in Go

Choice 1:

package deal answer
import "type"
func TwoOldestAges(ages []int) [2]int {
  type.Kind(type.Reverse(type.IntSlice(ages)))
  return [2]int{ages[1],ages[0]}
}

Choice 2:

package deal answer
func TwoOldestAges(ages []int) [2]int {
  a, b := 0, 0
  for _, v := vary ages {
    if v > b {
      a, b = b, v
    } else if v > a {
      a = v
    }
  }
  return [2]int{a, b}
}

Choice 3:

package deal answer
import "type"
func TwoOldestAges(ages []int) [2]int {
  type.Ints(ages)
  return [2]int{ages[len(ages)-2],ages[len(ages)-1]}
}

Check instances to validate our answer

package deal solution_test
import (
  . "github.com/onsi/ginkgo"
  . "github.com/onsi/gomega"
)
var _ = Describe("TwoOldestAges", func() {
  It("ought to return 18 and 83 for enter []int{6,5,83,5,3,18}", func() {
    Anticipate(TwoOldestAges([]int{6,5,83,5,3,18})).To(Equal([2]int{18,83}))
  })
  It("ought to return 45 and 87 for enter []int{1,5,87,45,8,8}", func() {
    Anticipate(TwoOldestAges([]int{1,5,87,45,8,8})).To(Equal([2]int{45,87}))
  })
})