ArgMax on ints

argmax.go

type Increasing interface {
	Less(i, j int) bool
	Len() int
}

func ArgMax(data Increasing) (index int) {
	for i := 0; i < data.Len(); i++ {
		if i==0 || data.Less(index,i) {
			index = i
		}
	}
	return
}

type IntArray []int
func (p IntArray) Len() int           { return len(p) }
func (p IntArray) Less(i, j int) bool { return p[i] < p[j] }

func ArgMaxInt(arr []int) (index int, max int) {
	for i,n := range arr {
		if i==0 || n > max {
			index = i
			max = n
		}
	}
	return
}

func main() {
		array := []int{1,2,3,4,5,6,7,6,5,4,11113,2,1}
		a := IntArray(array[0:])
		i,max := ArgMaxInt(array)
		println(i)
		println(max)
		println(ArgMaxGeneric(a))
}

Example, at least, of how to write ArgMax in Go -- One generic way, and one specific to Ints (which could be described as Uints, etc)