day 01, part 2

01/main.go

@@ -45,10 +45,23 @@ func main() {
 		return rightList[i] < rightList[j]
 	})
 
+	simMap := make(map[int]int)
 	totalDistance := 0
 	for i := 0; i < len(leftList); i++ {
+		for _, rightItem := range rightList {
+			if rightItem == leftList[i] {
+				simMap[leftList[i]]++
+			}
+		}
+
 		totalDistance += int(math.Abs(float64(leftList[i] - rightList[i])))
 	}
 
-	fmt.Println(totalDistance)
+	simScore := 0
+	for number, count := range simMap {
+		simScore += number * count
+	}
+
+	fmt.Printf("total distance: %d\n", totalDistance)
+	fmt.Printf("total sim score: %d\n", simScore)
 }