From 192d9b1ad6e0fc1c96619ba6f4ad1b740c5ef8b2 Mon Sep 17 00:00:00 2001
From: setop <setop@zoocoop.com>
Date: Sun, 1 Jan 2023 20:14:00 +0100
Subject: [PATCH] day 10, part 2, no need to buffer, spare 10 loc

---
 d10/part2.awk | 16 +++-------------
 1 file changed, 3 insertions(+), 13 deletions(-)

diff --git a/d10/part2.awk b/d10/part2.awk
index a58678f..810a109 100644
--- a/d10/part2.awk
+++ b/d10/part2.awk
@@ -1,20 +1,10 @@
-BEGIN { x=1 }
 function inc() {
-  i = (c%40)
-	A[c+1] = (i==x-1||i==x||i==x+1) ? "█" : "░"
-	c+=1
+	i = (c++%40)  # inc c after
+	printf "%s", (i==x||i==x+1||i==x+2) ? "█" : " "
+	if (i == 39) { print "" }
 }
 { inc() }
 $1 == "addx" {
 	inc()
 	x+=$2
 }
-END {
-	for (i=0;i<=5;i++) {
-		r = ""
-		for (j=1;j<=40;j++) {
-			r = r A[i*40+j]
-		}
-		print r
-	}
-}
\ No newline at end of file