remove occurrences var

day-01/internal/two/solve.go

@@ -32,27 +32,26 @@ func Solve() (int, error) {
 			continue
 		}
 
-		var occurrences int
-		for _, n := range right[indx:] {
+		for i, n := range right[indx:] {
 			if n > k {
+				similarity += k * v * i
 				break
 			}
-			occurrences++
 		}
-		similarity += k * v * occurrences
 	}
 
 	return similarity, nil
 }
 
 func parseLines(r io.Reader) (map[int]int, []int, error) {
-	var left map[int]int = make(map[int]int)
-	var right []int
+	left := make(map[int]int)
+	right := []int{}
 
 	scanner := bufio.NewScanner(r)
 	for scanner.Scan() {
 		nums := reNums.FindAllString(scanner.Text(), -1)
-		left[util.MustConv(nums[0])] = left[util.MustConv(nums[0])] + 1
+
+		left[util.MustConv(nums[0])]++
 		right = util.InsertSorted(right, util.MustConv(nums[1]))
 	}