Day 3: spiral

03dec/main.go

@@ -7,6 +7,7 @@ import (
 )
 
 const (
+	// directions
 	W = iota
 	N
 	E
@@ -14,14 +15,14 @@ const (
 )
 
 var (
+	// current value
 	cur int
-	x    int
-	y    int
+	// current position
+	x, y int
+	// current direction
 	dir int
-	xmax int
-	xmin int
-	ymax int
-	ymin int
+	// grid bounds
+	xmax, xmin, ymax, ymin int
 )
 
 func main() {
@@ -29,15 +30,13 @@ func main() {
 	if err != nil {
 		os.Exit(1)
 	}
-	fmt.Println(n)
-
-	// create cell and compute change direction, expand grid
+	// move current position in grid and compute change direction, expand grid
 	for cur < n {
 		nextMove()
-		fmt.Println(cur, x, y)
+		// fmt.Println(cur, x, y)
 	}
-
-	fmt.Println("\n", Abs(x)+Abs(y))
+	// distance to position
+	fmt.Println(Abs(x) + Abs(y))
 }
 
 func nextMove() {