advent-of-code-2022

commit 6fad1ecdde0cd28dcf7c98994b4dbd1709727a55
parent 5104f5b0d65bab5b35ee0dd800b0916b9a56e30a
Author: Jake Bauer <jbauer@paritybit.ca>
Date:   Sun,  4 Dec 2022 15:41:07 -0500

Improved solution for Day 4

Diffstat:
M
day4/main.c
 | 
25
+++++--------------------

1 file changed, 5 insertions(+), 20 deletions(-)
diff --git a/day4/main.c b/day4/main.c
@@ -45,30 +45,15 @@ main (void)
 		splitString(ranges[0], '-', range1);
 		splitString(ranges[1], '-', range2);
 
-		// Simple comparisons. I wonder if there's a mathematically
-		// clever way to solve this...
+		if (atoi(range1[0]) <= atoi(range2[1])
+				&& atoi(range1[1]) >= atoi(range2[0]))
+			overlaps++;
 		if (atoi(range1[0]) >= atoi(range2[0])
-			&& atoi(range1[1]) <= atoi(range2[1]))
-		{
+				&& atoi(range1[1]) <= atoi(range2[1]))
 			fullOverlaps++;
-			overlaps++;
-		}
 		else if (atoi(range1[0]) <= atoi(range2[0])
-			&& atoi(range1[1]) >= atoi(range2[1]))
-		{
+				&& atoi(range1[1]) >= atoi(range2[1]))
 			fullOverlaps++;
-			overlaps++;
-		}
-		else if (atoi(range1[0]) <= atoi(range2[1])
-			&& atoi(range1[1]) >= atoi(range2[0]))
-		{
-			overlaps++;
-		}
-		else if (atoi(range1[0]) >= atoi(range2[1])
-			&& atoi(range1[1]) <= atoi(range2[0]))
-		{
-			overlaps++;
-		}
 	}
 	free(line);
 	if (ferror(fp))