Problem 2

main.go

@@ -3,5 +3,5 @@ package main
 import "log"
 
 func main() {
-	log.Println(problem1(16, []int{10, 15, 3, 7}))
+	log.Println(problem2([]int{3, 2, 1}))
 }

problem2.go

@@ -0,0 +1,18 @@
+package main
+
+func problem2(nums []int) []int {
+	var out []int
+	for i := range nums {
+		val := multiplySlice(nums[:i]) * multiplySlice(nums[i+1:])
+		out = append(out, val)
+	}
+	return out
+}
+
+func multiplySlice(nums []int) int {
+	out := 1
+	for _, num := range nums {
+		out *= num
+	}
+	return out
+}