initial commit, day 10

04b_alt.py

@@ -0,0 +1,27 @@
+#!/usr/bin/python
+
+import re
+
+with open('04a.txt') as f:
+    text = f.read().strip().replace('\n', 'Z')
+
+TOP =    r'M[^Z]M.{139}A.{139}S[^Z]S'
+LEFT =   r'M[^Z]S.{139}A.{139}M[^Z]S'
+BOTTOM = r'S[^Z]S.{139}A.{139}M[^Z]M'
+RIGHT =  r'S[^Z]M.{139}A.{139}S[^Z]M'
+
+T = re.compile(f'(?={TOP})')
+L = re.compile(f'(?={LEFT})')
+B = re.compile(f'(?={BOTTOM})')
+R = re.compile(f'(?={RIGHT})')
+
+T_ = len(T.findall(text))
+L_ = len(L.findall(text))
+B_ = len(B.findall(text))
+R_ = len(R.findall(text))
+
+print(f'TOP    {T_}')
+print(f'LEFT   {L_}')
+print(f'BOTTOM {B_}')
+print(f'RIGHT  {R_}')
+print(f'TOTAL  {T_ + L_ + B_ + R_}')