remove duplicate: loop 2

main.go

func removeDuplicateLoop2(arr []int) []int {
	r := make([]int, 0)
	for i := range arr {
		for j := range r {
			if arr[i] == r[j] {
				goto duplicated
			}
		}
		r = append(r, arr[i])

	duplicated:
	}
	return r
}