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authorJune McEnroe <june@causal.agency>2018-12-05 01:51:11 -0500
committerJune McEnroe <june@causal.agency>2020-11-22 00:14:25 -0500
commiteb2fee53e6de6873266944a4c47d748bc818ac69 (patch)
treeadba4fb0cfee685155fee1b74fb4b6c88616ec91
parentSolve day 4 part 2 (diff)
downloadaoc-eb2fee53e6de6873266944a4c47d748bc818ac69.tar.gz
aoc-eb2fee53e6de6873266944a4c47d748bc818ac69.zip
Solve day 5 part 1
-rw-r--r--2018/day05.c17
1 files changed, 17 insertions, 0 deletions
diff --git a/2018/day05.c b/2018/day05.c
new file mode 100644
index 0000000..5cb9366
--- /dev/null
+++ b/2018/day05.c
@@ -0,0 +1,17 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+int main() {
+	char buf[50000];
+	size_t len = fread(buf, 1, sizeof(buf), stdin);
+	for (size_t i = 0; i < len - 1; ++i) {
+		if (tolower(buf[i]) != tolower(buf[i + 1])) continue;
+		if (islower(buf[i]) == islower(buf[i + 1])) continue;
+		len -= 2;
+		memmove(&buf[i], &buf[i + 2], len - i);
+		i = (size_t)-1;
+	}
+	printf("%zu\n", len);
+}