✨ (sum_tails): add sum_tails function

Author: yuanyu90221

arrays-and-slices/sum.go

@@ -16,3 +16,12 @@ func SumAll(numbersToSum ...[]int) []int {
 	}
 	return sums
 }
+
+func SumAllTails(numbersToSum ...[]int) []int {
+	lengthOfNumbersToSum := len(numbersToSum)
+	sums := make([]int, lengthOfNumbersToSum)
+	for i, numbers := range numbersToSum {
+		sums[i] = Sum(numbers)
+	}
+	return sums
+}

arrays-and-slices/sum_test.go

@@ -41,7 +41,7 @@ func TestSumAll(t *testing.T) {
 
 func TestSumAllTails(t *testing.T) {
 
-	got := SumAllTails([]int{1, 2}, int{0, 9})
+	got := SumAllTails([]int{1, 2}, []int{0, 9})
 	want := []int{2, 9}
 
 	if !reflect.DeepEqual(got, want) {