From 5020fc18ce4a56af3702771d201c4566e3fd2261 Mon Sep 17 00:00:00 2001
From: Daylin Morgan <me@dayl.in>
Date: Sun, 1 Dec 2024 12:39:48 -0600
Subject: [PATCH] solution 1

---
 solutions/day01/example.txt  |  6 ++++++
 solutions/day01/solution.nim | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 38 insertions(+)
 create mode 100644 solutions/day01/example.txt
 create mode 100644 solutions/day01/solution.nim

diff --git a/solutions/day01/example.txt b/solutions/day01/example.txt
new file mode 100644
index 0000000..b8af9ad
--- /dev/null
+++ b/solutions/day01/example.txt
@@ -0,0 +1,6 @@
+3   4
+4   3
+2   5
+1   3
+3   9
+3   3
diff --git a/solutions/day01/solution.nim b/solutions/day01/solution.nim
new file mode 100644
index 0000000..78795f5
--- /dev/null
+++ b/solutions/day01/solution.nim
@@ -0,0 +1,32 @@
+import std/[strutils, algorithm, sequtils, tables]
+import aoc
+
+proc parseInput(input: string): (seq[int], seq[int]) =
+  for line in input.splitLines():
+    let s = line.splitWhitespace()
+    assert s.len == 2
+    result[0].add parseInt(s[0])
+    result[1].add parseInt(s[1])
+
+proc partOne*(input: string): int =
+  var ids = parseInput(input)
+  ids[0].sort
+  ids[1].sort
+  for (l, r) in zip(ids[0],ids[1]):
+    result += abs(l-r)
+
+
+proc partTwo*(input: string): int =
+  var ids = parseInput(input)
+  let counts = toCountTable ids[1]
+  for id in ids[0]:
+    if id in counts:
+      result += id * counts[id]
+
+solve:
+  "example.txt":
+    partOne: 11
+    partTwo: 31
+  "input.txt":
+    partOne: 1590491
+    partTwo: 22588371