Two Sum II - Input array is sorted

twoSum.go

func twoSum(numbers []int, target int) []int {
    if len(numbers) <2 {
        return nil
    }
    i :=0  
    j := len(numbers)-1
    for  i< j {
        sum  := numbers[i] + numbers[j]
        if sum == target {
            return []int{i+1, j+1}
            break
        } else if sum > target {
            j--
        } else {
            i++
        }
    }
    return  nil 
}