From 8128b4edcaca761585f6ab81c7c4a9aaff763532 Mon Sep 17 00:00:00 2001
From: FanDabbyDoozy <ps20163152@student.vsa.edu.hk>
Date: Sun, 8 Dec 2024 11:05:01 +0800
Subject: Create 3B.py

---
 2024/3B.py | 41 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 2024/3B.py

diff --git a/2024/3B.py b/2024/3B.py
new file mode 100644
index 0000000..61852d0
--- /dev/null
+++ b/2024/3B.py
@@ -0,0 +1,41 @@
+import re
+
+with open('3.txt', 'r') as f:
+    data = f.read()
+# Regular expressions for matching patterns
+mul_pattern = r'mul\(\d+,\d+\)'
+do_pattern = r'do\(\)'
+dont_pattern = r"don't\(\)"
+
+multiply = True
+muls = 0
+
+en_muls = []
+
+# Find all mul commands and do/don't instructions
+matches = re.finditer(mul_pattern + '|' + do_pattern + '|' + dont_pattern, data)
+
+for match in matches:
+    pattern = match.group()
+    print(pattern)
+
+    #identify "do()" and "dont()"
+
+    if pattern == "do()":
+        multiply = True
+    elif pattern == "don't()":
+        multiply = False
+    elif pattern.startswith('mul'):
+        if multiply:
+            en_muls.append(pattern)
+
+print(en_muls)
+
+ints = [l.split("mul(")[1].rstrip(')') for l in en_muls]
+print(ints)
+
+for i in ints:
+    n1, n2 = map(int, i.split(','))
+    print(n1, n2)
+    muls += n1 * n2
+print(muls)
-- 
cgit v1.2.3