From ea530e7d8d1d533e52aba6d28540a673366eb84b Mon Sep 17 00:00:00 2001
From: Bruno Raoult <braoult@gmail.com>
Date: Tue, 20 Sep 2022 19:57:27 +0200
Subject: [PATCH] 2019 day 4, minor is_valid() simplification

---
 2019/day04/aoc-c.c | 16 ++++++----------
 1 file changed, 6 insertions(+), 10 deletions(-)

diff --git a/2019/day04/aoc-c.c b/2019/day04/aoc-c.c
index 147b13b..5cc300b 100644
--- a/2019/day04/aoc-c.c
+++ b/2019/day04/aoc-c.c
@@ -34,16 +34,12 @@ static int is_valid(int number, int part)
             dups[digit] += 2;
         }
     }
-    if (!valid)
-        return 0;
-    if (part == 2) {
-        valid = 0;
-        for (int i = 0; i < 10; ++i) {
-            if (dups[i] == 2)
-                return 1;
-        }
-    }
-    return valid;
+    if (!valid || part == 1)
+        return valid;
+    for (int i = 0; i < 10; ++i)
+        if (dups[i] == 2)
+            return 1;
+    return 0;
 }
 
 static int doit(int *nums, int part)