From 21b17417afabf4a77aab72839e35450918a9dcbe Mon Sep 17 00:00:00 2001
From: Luna Lailatova <lunavonkiel@t-online.de>
Date: Mon, 13 Dec 2021 20:15:36 +0100
Subject: [PATCH] day 13

---
 day13.py       |  73 +++++
 input13.txt    | 812 +++++++++++++++++++++++++++++++++++++++++++++++++
 testdata13.txt |  21 ++
 3 files changed, 906 insertions(+)
 create mode 100644 day13.py
 create mode 100644 input13.txt
 create mode 100644 testdata13.txt

diff --git a/day13.py b/day13.py
new file mode 100644
index 0000000..7ced193
--- /dev/null
+++ b/day13.py
@@ -0,0 +1,73 @@
+import sys
+
+check = True
+inpx = []
+inpy = []
+inp2 = []
+
+with open(sys.argv[1]) as f:
+    for i in f.readlines():
+        i = i.strip()
+        if i == '':
+            check = False
+            continue
+        if check:
+            temp1, temp2 = i.split(',', 1)
+            inpx.append(int(temp1))
+            inpy.append(int(temp2))
+        else:
+            i = i.replace('fold along ', '')
+            i = i.strip()
+            temp1, temp2 = i.split('=', 1)
+            inp2.append((temp1, int(temp2)))
+
+maxx = max(inpx)
+maxy = max(inpy)
+
+class grid:
+    def __init__(self, maxx, maxy):
+        self._points = []
+
+        for i in range(maxy + 1):
+            self._points.append(['.'] * (maxx + 1))
+    
+    def mark(self, x, y):
+        self._points[y][x] = '#'
+    
+    def fold(self, axis, loca):
+        if axis == 'y':
+            for i in range(loca + 1, len(self._points)):
+                for t in range(len(self._points[i])):
+                    if self._points[i][t] == '#':
+                        temp = i - loca
+                        self._points[loca -temp][t] = '#'
+            del self._points[loca:len(self._points)]
+        if axis == 'x':
+            for i in range(len(self._points)):
+                for t in range(loca + 1, len(self._points[i])):
+                    if self._points[i][t] == '#':
+                        temp = t - loca
+                        self._points[i][loca - temp] = '#'
+            for f in self._points:
+                del f[loca:len(f)]
+    def count(self):
+        counter = 0
+        for f in self._points:
+            for g in f:
+                if g == '#':
+                    counter += 1
+        return counter
+
+gri = grid(maxx, maxy)
+folds = 0
+
+for i in range(len(inpx)):
+    gri.mark(inpx[i], inpy[i])
+
+for i in inp2:
+    gri.fold(i[0], i[1])
+    folds += 1
+    print('Points after ', folds, 'fold(s):', gri.count())
+
+for i in range(len(gri._points)):
+    print(gri._points[i])
\ No newline at end of file
diff --git a/input13.txt b/input13.txt
new file mode 100644
index 0000000..68728c8
--- /dev/null
+++ b/input13.txt
@@ -0,0 +1,812 @@
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+
+fold along x=655
+fold along y=447
+fold along x=327
+fold along y=223
+fold along x=163
+fold along y=111
+fold along x=81
+fold along y=55
+fold along x=40
+fold along y=27
+fold along y=13
+fold along y=6
diff --git a/testdata13.txt b/testdata13.txt
new file mode 100644
index 0000000..282114c
--- /dev/null
+++ b/testdata13.txt
@@ -0,0 +1,21 @@
+6,10
+0,14
+9,10
+0,3
+10,4
+4,11
+6,0
+6,12
+4,1
+0,13
+10,12
+3,4
+3,0
+8,4
+1,10
+2,14
+8,10
+9,0
+
+fold along y=7
+fold along x=5