From 7fd2536a85c9bc44b67bc15b51143d8e73921367 Mon Sep 17 00:00:00 2001
From: Clement Chiew <c.chiewjianming@assai.nl>
Date: Tue, 3 Dec 2024 10:14:09 +0800
Subject: [PATCH] Added solutions

---
 2024/day-1/input.txt              | 1000 +++++++++++++++++++++++++++++
 2024/day-1/solution-1.sh          |   10 +
 2024/day-1/solution-2.sh          |    8 +
 2024/day-2/.solution-2.sh.swp     |  Bin 0 -> 12288 bytes
 2024/day-2/input.txt              | 1000 +++++++++++++++++++++++++++++
 2024/day-2/solution-2-working.awk |   46 ++
 2024/day-2/solution-2.awk         |   47 ++
 2024/day-2/solution.awk           |   32 +
 8 files changed, 2143 insertions(+)
 create mode 100644 2024/day-1/input.txt
 create mode 100644 2024/day-1/solution-1.sh
 create mode 100644 2024/day-1/solution-2.sh
 create mode 100644 2024/day-2/.solution-2.sh.swp
 create mode 100755 2024/day-2/input.txt
 create mode 100644 2024/day-2/solution-2-working.awk
 create mode 100644 2024/day-2/solution-2.awk
 create mode 100644 2024/day-2/solution.awk

diff --git a/2024/day-1/input.txt b/2024/day-1/input.txt
new file mode 100644
index 0000000..a7888fa
--- /dev/null
+++ b/2024/day-1/input.txt
@@ -0,0 +1,1000 @@
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diff --git a/2024/day-1/solution-1.sh b/2024/day-1/solution-1.sh
new file mode 100644
index 0000000..876d5e7
--- /dev/null
+++ b/2024/day-1/solution-1.sh
@@ -0,0 +1,10 @@
+#!/usr/bin/env bash
+
+INPUT_FILE=input.txt
+
+paste \
+  <(awk '{print $1}' $INPUT_FILE | sort -n ) \
+  <(awk '{print $2}' $INPUT_FILE | sort -n ) |
+  awk '{ $1 > $2 ? diff = ($1 - $2) : diff = ($2 - $1) ; print diff}' |
+  paste -s -d "+" | 
+  bc
diff --git a/2024/day-1/solution-2.sh b/2024/day-1/solution-2.sh
new file mode 100644
index 0000000..9ccdcd2
--- /dev/null
+++ b/2024/day-1/solution-2.sh
@@ -0,0 +1,8 @@
+#!/usr/bin/env bash
+
+join -1 2 -2 2 \
+  <( awk '{print $2}' input.txt | sort -n | uniq -c ) \
+  <( awk '{print $1}' input.txt | sort -n | uniq -c ) |
+  awk '{print $1 * $2 * $3 }' |
+  paste -s -d "+" |
+  bc
diff --git a/2024/day-2/.solution-2.sh.swp b/2024/day-2/.solution-2.sh.swp
new file mode 100644
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literal 0
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diff --git a/2024/day-2/input.txt b/2024/day-2/input.txt
new file mode 100755
index 0000000..6c0035f
--- /dev/null
+++ b/2024/day-2/input.txt
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diff --git a/2024/day-2/solution-2-working.awk b/2024/day-2/solution-2-working.awk
new file mode 100644
index 0000000..54dd197
--- /dev/null
+++ b/2024/day-2/solution-2-working.awk
@@ -0,0 +1,46 @@
+#!/usr/bin/env awk
+
+BEGIN {
+  safe = 0
+}
+{
+  if ($2 > $1) {
+    order = 0
+  } else {
+    order = 1
+  }
+  skip = 0
+  for (i = 1; i < NF; i++) {
+    j = i + 1
+    k = i + 2
+    if ( $i < $j && order == 1 ) {
+      if ( $i < $k && order == 1 ) {
+        next
+      }
+    } else if ( $i > $j && order == 0) {
+      if ( $i > $k && order == 0 ) {
+        next
+      }
+    }
+    if ( $i < $j ) {
+      diff = $j - $i
+    } else { 
+      diff = $i - $j
+    }
+    if ( $i < $k ) {
+      diff2 = $k - $i
+    } else { 
+      diff2 = $i - $k
+    }
+    if (diff > 3 || diff < 1) {
+      if (diff2 > 3 || diff2 < 1) {
+        next
+      }
+    }
+
+  }
+  safe += 1
+}
+END {
+  print safe
+}
diff --git a/2024/day-2/solution-2.awk b/2024/day-2/solution-2.awk
new file mode 100644
index 0000000..9d5d4c9
--- /dev/null
+++ b/2024/day-2/solution-2.awk
@@ -0,0 +1,47 @@
+#!/usr/bin/env awk
+
+BEGIN {
+  # Initialize number of lines counter
+  safe = 0
+}
+{
+  if ($2 > $1) {
+    order = 0
+  } else {
+    order = 1
+  }
+  skip = 0
+  for (i = 1; i < NF; i++) {
+    j = i + 1
+    k = i + 2
+    if ( $i < $j && order == 1 ) {
+      if ( $i < $k && order == 1 ) {
+        next
+      }
+    } else if ( $i > $j && order == 0) {
+      if ( $i > $k && order == 0 ) {
+        next
+      }
+    }
+    if ( $i < $j ) {
+      diff = $j - $i
+    } else { 
+      diff = $i - $j
+    }
+    if ( $i < $k ) {
+      diff2 = $k - $i
+    } else { 
+      diff2 = $i - $k
+    }
+    if (diff > 3 || diff < 1) {
+      if (diff2 > 3 || diff2 < 1) {
+        next
+      }
+    }
+
+  }
+  safe += 1
+}
+END {
+  print safe
+}
diff --git a/2024/day-2/solution.awk b/2024/day-2/solution.awk
new file mode 100644
index 0000000..34c5955
--- /dev/null
+++ b/2024/day-2/solution.awk
@@ -0,0 +1,32 @@
+#!/usr/bin/env awk
+
+BEGIN {
+  safe = 0
+}
+{
+  if ($2 > $1) {
+    order = 0
+  } else {
+    order = 1
+  }
+  for (i = 1; i < NF; i++) {
+    j = i + 1
+    if ( $i < $j && order == 1 ) {
+      next
+    } else if ( $i > $j && order == 0) {
+      next
+    }
+    if ( $i < $j ) {
+      diff = $j - $i
+    } else { 
+      diff = $i - $j
+    }
+    if (diff > 3 || diff < 1) {
+      next
+    }
+  }
+  safe += 1
+}
+END {
+  print safe
+}