package main import ( "fmt" ) // complexity O(n) func getArrayCombination(arr []int, target int) []int{ tampungData := make(map[int]int,0) for index, data := range arr{ searchNumber := target-data if value, found := tampungData[searchNumber]; found { return []int{tampungData[value],index} } tampungData[data] = index } return []int{} } func main() { fmt.Println(getArrayCombination([]int{1,2,3,4,9}, 10)) }