From 13722dcd8f2f652cc6a039f882f8f17263cbd623 Mon Sep 17 00:00:00 2001
From: Michael Zhang <mail@mzhang.io>
Date: Mon, 5 Dec 2022 01:45:41 -0600
Subject: [PATCH] day 3

---
 03-ex.txt |   6 ++
 03.txt    | 300 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 03.yab    |  62 +++++++++++
 3 files changed, 368 insertions(+)
 create mode 100644 03-ex.txt
 create mode 100644 03.txt
 create mode 100644 03.yab

diff --git a/03-ex.txt b/03-ex.txt
new file mode 100644
index 0000000..f17e726
--- /dev/null
+++ b/03-ex.txt
@@ -0,0 +1,6 @@
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diff --git a/03.txt b/03.txt
new file mode 100644
index 0000000..53d6524
--- /dev/null
+++ b/03.txt
@@ -0,0 +1,300 @@
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diff --git a/03.yab b/03.yab
new file mode 100644
index 0000000..1b90243
--- /dev/null
+++ b/03.yab
@@ -0,0 +1,62 @@
+sub getPriority(ch$)
+  local a
+  a = asc(ch$)
+  if and(a>=asc("a"), a<=asc("z")) return a-asc("a")+1
+  if and(a >= asc("A"), a<=asc("Z")) return a-asc("A")+27
+end sub
+
+open "03.txt" for reading as #1
+
+sum = 0
+while not eof(1)
+  line input #1 line$
+  lineLen = len(line$)
+  halfLen = lineLen/2
+
+  firstHalf$ = mid$(line$, 1, halfLen)
+  secondHalf$ = mid$(line$, halfLen + 1)
+
+  for i=1 to halfLen
+    for j=1 to halfLen
+      if mid$(firstHalf$, i, 1) == mid$(secondHalf$, j, 1) then
+        dup$ = mid$(firstHalf$, i, 1)
+        break 2
+      endif
+    next j
+  next i
+
+  sum = sum + getPriority(dup$)
+wend
+close #1
+
+print sum
+
+open "03.txt" for reading as #1
+
+sum = 0
+while not eof(1)
+  line input #1 line1$
+  line input #1 line2$
+  line input #1 line3$
+
+  for i=1 to len(line1$)
+    c1$ = mid$(line1$, i, 1)
+
+    for j=1 to len(line2$)
+      c2$ = mid$(line2$, j, 1)
+      if c1$ != c2$ continue
+
+      for k=1 to len(line3$)
+        c3$ = mid$(line3$, k, 1)
+        if c2$ != c3$ continue
+
+        badge$ = c3$
+      next k
+    next j
+  next i
+
+  sum = sum + getPriority(badge$)
+wend
+close #1
+
+print sum