From e7c9108b95e39d7ea5a29ae06d619c4727f11027 Mon Sep 17 00:00:00 2001
From: Thomas Voss <thomasvoss@live.com>
Date: Fri, 29 Oct 2021 23:02:39 +0200
Subject: Initial commit

---
 2020/02/puzzle-2.awk | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)
 create mode 100755 2020/02/puzzle-2.awk

(limited to '2020/02/puzzle-2.awk')

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 }
-- 
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