Initial commit

1 files changed, 19 insertions, 0 deletions

diff --git a/2020/02/puzzle-2.awk b/2020/02/puzzle-2.awk
new file mode 100755
index 0000000..24398e7
--- /dev/null
+++ b/2020/02/puzzle-2.awk
@@ -0,0 +1,19 @@
+#!/usr/bin/env -S awk -f
+
+{
+	split($1, pos, "-")
+	split($3, str, "")
+	char = substr($2, 1, 1)
+
+	# Count the frequency of char
+	freq = 0
+	if (str[pos[1]] == char)
+		freq++
+	if (str[pos[2]] == char)
+		freq++
+
+	if (freq == 1)
+		count++
+}
+
+END { print count }