From f1449067161b35a16beb48f69e6f8536e27a7523 Mon Sep 17 00:00:00 2001
From: Henri <henv@hot.ee>
Date: Thu, 2 Dec 2021 12:42:21 +0200
Subject: [PATCH] add 02

---
 day02/day02.ps1 |   43 ++
 day02/input.txt | 1000 +++++++++++++++++++++++++++++++++++++++++++++++
 day02/test.txt  |    6 +
 3 files changed, 1049 insertions(+)
 create mode 100644 day02/day02.ps1
 create mode 100644 day02/input.txt
 create mode 100644 day02/test.txt

diff --git a/day02/day02.ps1 b/day02/day02.ps1
new file mode 100644
index 0000000..7de15a7
--- /dev/null
+++ b/day02/day02.ps1
@@ -0,0 +1,43 @@
+param(
+    [parameter(mandatory=$true)]
+    $path
+)
+
+$commands = gc $path | % {
+    if ($_ -match '(?<command>forward|up|down) (?<amt>\d+)') {
+        [pscustomobject] @{
+            command = $Matches["command"];
+            amt = [int]$Matches["amt"];
+        }
+    }
+}
+
+echo "question 1"
+
+$position = 0
+$depth = 0
+
+foreach ($c in $commands) {
+    switch ($c.command) {
+        "forward" { $position += $c.amt }
+        "up"      { $depth -= $c.amt }
+        "down"    { $depth += $c.amt }
+    }
+}
+
+echo "position: $position, depth: $depth, answer: $($position * $depth)"
+
+echo "question 2"
+
+$position = 0
+$depth = 0
+$aim = 0
+
+foreach ($c in $commands) {
+    switch ($c.command) {
+        "forward" { $position += $c.amt; $depth += $aim * $c.amt }
+        "up"      { $aim -= $c.amt }
+        "down"    { $aim += $c.amt }
+    }
+}
+echo "position: $position, depth: $depth, answer: $($position * $depth)"
diff --git a/day02/input.txt b/day02/input.txt
new file mode 100644
index 0000000..04dd8e1
--- /dev/null
+++ b/day02/input.txt
@@ -0,0 +1,1000 @@
+forward 4
+forward 6
+down 8
+forward 3
+forward 9
+down 7
+down 7
+down 1
+forward 1
+forward 5
+up 4
+forward 3
+forward 9
+forward 5
+down 8
+forward 6
+forward 8
+up 4
+forward 1
+forward 4
+up 3
+down 2
+down 2
+up 8
+forward 9
+down 5
+down 6
+down 4
+forward 1
+forward 7
+down 1
+forward 2
+down 7
+down 6
+forward 3
+forward 1
+down 7
+forward 3
+up 7
+up 1
+forward 6
+down 8
+down 4
+down 1
+down 7
+forward 9
+down 2
+forward 9
+up 4
+down 7
+forward 9
+forward 9
+up 4
+up 7
+up 2
+forward 1
+down 9
+forward 2
+forward 8
+forward 5
+down 9
+forward 5
+up 1
+forward 8
+down 6
+down 1
+down 1
+down 8
+down 6
+down 4
+down 6
+forward 7
+forward 5
+forward 4
+up 8
+up 4
+forward 6
+forward 9
+forward 6
+down 2
+up 8
+forward 3
+forward 8
+down 5
+forward 1
+down 6
+down 7
+up 4
+down 8
+forward 6
+up 4
+forward 7
+down 8
+down 8
+down 2
+down 8
+up 7
+forward 7
+forward 6
+down 2
+forward 9
+down 7
+down 4
+forward 1
+up 9
+down 6
+up 7
+down 6
+down 2
+down 2
+forward 3
+down 8
+forward 4
+down 7
+down 2
+up 8
+down 6
+forward 2
+forward 2
+down 6
+up 6
+down 7
+up 5
+up 4
+up 9
+forward 9
+forward 7
+down 4
+down 4
+up 5
+down 2
+forward 3
+down 9
+down 5
+forward 8
+up 3
+forward 7
+forward 9
+down 3
+forward 1
+up 1
+forward 5
+down 8
+down 2
+forward 3
+down 6
+down 8
+up 9
+down 9
+forward 4
+up 5
+forward 8
+forward 7
+forward 7
+down 3
+down 5
+forward 8
+down 1
+down 2
+forward 2
+up 9
+down 3
+down 9
+forward 2
+down 4
+up 9
+up 3
+down 1
+down 1
+forward 6
+down 5
+down 9
+forward 2
+up 5
+forward 3
+down 1
+down 7
+forward 1
+forward 1
+down 7
+up 3
+up 1
+up 6
+forward 9
+up 1
+down 8
+down 5
+up 6
+up 2
+down 8
+forward 3
+forward 1
+down 7
+up 1
+down 9
+down 9
+up 8
+forward 4
+up 8
+forward 8
+down 5
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+forward 2
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+down 8
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+up 1
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+up 8
+up 3
+forward 6
+down 9
+forward 4
+down 4
+forward 2
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+down 4
+down 5
+down 3
+forward 9
+forward 5
+forward 9
+forward 4
+down 5
+down 7
+down 5
+forward 8
+up 5
+down 2
+forward 3
+forward 4
+down 5
+up 8
+forward 5
+down 2
+up 4
+down 5
+down 2
+forward 1
+up 3
+down 6
+down 8
+down 3
+forward 1
+up 5
+forward 1
+down 3
+forward 4
+down 6
+forward 8
+forward 4
+forward 1
+down 8
+down 2
+forward 8
+down 5
+forward 2
+forward 2
+down 9
+forward 1
+forward 8
+up 1
+forward 1
+down 1
+down 7
+down 4
+up 4
+down 3
+forward 1
+forward 9
+down 9
+up 6
+up 8
+down 2
+down 2
+down 3
+forward 2
+forward 9
+down 1
+up 9
+down 3
+down 9
+down 1
+down 7
+forward 9
+forward 7
+down 5
+down 2
+down 9
+down 2
+down 7
+up 7
+down 2
+up 3
+up 5
+forward 8
+up 7
+forward 1
+down 9
+down 9
+down 1
+forward 6
+down 7
+up 4
+up 4
+down 9
+up 5
+up 8
+down 3
+down 5
+forward 6
+up 3
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+down 5
+forward 9
+up 6
+forward 9
+forward 5
+up 6
+up 9
+down 2
+up 5
+forward 9
+down 1
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+down 9
+forward 4
+forward 4
+forward 8
+down 5
+down 3
+down 7
+forward 5
+down 6
+forward 3
+down 5
+down 5
+up 5
+forward 8
+forward 1
+forward 2
+forward 6
+up 1
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+down 2
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+forward 7
+down 6
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+forward 6
+down 1
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+down 9
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+up 2
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+forward 9
+down 1
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+down 4
+up 2
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+down 3
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+down 7
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+down 8
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+down 2
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+up 4
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diff --git a/day02/test.txt b/day02/test.txt
new file mode 100644
index 0000000..b7172ac
--- /dev/null
+++ b/day02/test.txt
@@ -0,0 +1,6 @@
+forward 5
+down 5
+forward 8
+up 3
+down 8
+forward 2