From 74a9f60b122ffcccfa21ffc461abd4dbc8f7a566 Mon Sep 17 00:00:00 2001
From: Roland Thomas <roland@rtj.dev>
Date: Tue, 3 Oct 2023 14:19:08 -0400
Subject: [PATCH] Add 2021/day6

---
 2021/day6        |  1 +
 2021/day6.py     | 41 +++++++++++++++++++++++++++++++++++++++++
 2021/day6.sample |  1 +
 3 files changed, 43 insertions(+)
 create mode 100644 2021/day6
 create mode 100755 2021/day6.py
 create mode 100644 2021/day6.sample

diff --git a/2021/day6 b/2021/day6
new file mode 100644
index 0000000..66ede3c
--- /dev/null
+++ b/2021/day6
@@ -0,0 +1 @@
+3,5,2,5,4,3,2,2,3,5,2,3,2,2,2,2,3,5,3,5,5,2,2,3,4,2,3,5,5,3,3,5,2,4,5,4,3,5,3,2,5,4,1,1,1,5,1,4,1,4,3,5,2,3,2,2,2,5,2,1,2,2,2,2,3,4,5,2,5,4,1,3,1,5,5,5,3,5,3,1,5,4,2,5,3,3,5,5,5,3,2,2,1,1,3,2,1,2,2,4,3,4,1,3,4,1,2,2,4,1,3,1,4,3,3,1,2,3,1,3,4,1,1,2,5,1,2,1,2,4,1,3,2,1,1,2,4,3,5,1,3,2,1,3,2,3,4,5,5,4,1,3,4,1,2,3,5,2,3,5,2,1,1,5,5,4,4,4,5,3,3,2,5,4,4,1,5,1,5,5,5,2,2,1,2,4,5,1,2,1,4,5,4,2,4,3,2,5,2,2,1,4,3,5,4,2,1,1,5,1,4,5,1,2,5,5,1,4,1,1,4,5,2,5,3,1,4,5,2,1,3,1,3,3,5,5,1,4,1,3,2,2,3,5,4,3,2,5,1,1,1,2,2,5,3,4,2,1,3,2,5,3,2,2,3,5,2,1,4,5,4,4,5,5,3,3,5,4,5,5,4,3,5,3,5,3,1,3,2,2,1,4,4,5,2,2,4,2,1,4
diff --git a/2021/day6.py b/2021/day6.py
new file mode 100755
index 0000000..50c8333
--- /dev/null
+++ b/2021/day6.py
@@ -0,0 +1,41 @@
+#!/usr/bin/env python
+from sys import argv
+from collections import Counter, deque
+
+def attempt_one(line, iterations):
+    fishes = [int(fish) for fish in line if fish.isdigit()]
+
+    for days in range(iterations):
+        number_zeroes = fishes.count(0)
+        fishes = [fish if fish else 7 for fish in fishes]
+        if number_zeroes:
+            fishes.extend(number_zeroes * [9])
+        fishes = [fish-1 for fish in fishes]
+    return len(fishes)
+
+
+def lanternfish(line, iterations):
+    fishes = Counter([int(fish) for fish in line if fish.isdigit()])
+    fishes_list = [0] * 9
+    for fish in fishes:
+        fishes_list[fish] = fishes[fish]
+
+    fishes_que = deque(fishes_list)
+
+    for days in range(iterations):
+        number_zeroes = fishes_que.popleft()
+        fishes_que.append(number_zeroes)
+        fishes_que[6] += number_zeroes
+    return sum(fishes_que)
+
+
+
+def main():
+    with open("day6", "r") as file:
+        line = file.readline()
+
+    print(lanternfish(line, 80))
+    print(lanternfish(line, 256))
+
+if __name__ == "__main__":
+    main()
diff --git a/2021/day6.sample b/2021/day6.sample
new file mode 100644
index 0000000..55129f1
--- /dev/null
+++ b/2021/day6.sample
@@ -0,0 +1 @@
+3,4,3,1,2