From f67485afc6694bc0deb0b25a044e7a8061112bab Mon Sep 17 00:00:00 2001
From: Lennard Brinkhaus <lennard.brinkhaus@dragse.de>
Date: Sun, 4 Dec 2022 15:07:53 +0100
Subject: [PATCH] feat: implement day04

---
 src/day04.rs            |   63 +++
 src/input/day04/input01 | 1000 +++++++++++++++++++++++++++++++++++++++
 src/main.rs             |    7 +-
 3 files changed, 1069 insertions(+), 1 deletion(-)
 create mode 100644 src/day04.rs
 create mode 100644 src/input/day04/input01

diff --git a/src/day04.rs b/src/day04.rs
new file mode 100644
index 0000000..a3094c2
--- /dev/null
+++ b/src/day04.rs
@@ -0,0 +1,63 @@
+use crate::utils;
+
+pub fn execute_task01(content: &str) {
+    let vector = utils::convert_to_string_slice(&content);
+    let pairs: Vec<((i32, i32), (i32, i32))> = vector.iter().map(|line| convert_to_tuple(line)).collect();
+
+    let fully_pairs: usize = pairs
+        .into_iter()
+        .filter(|pair| is_fully_in_other(pair.0, pair.1))
+        .count();
+
+    println!("Day04 - Task01 - Sum of fully included pairs: {}", fully_pairs);
+}
+
+pub fn execute_task02(content: &str) {
+    let vector = utils::convert_to_string_slice(&content);
+    let pairs: Vec<((i32, i32), (i32, i32))> = vector.iter().map(|line| convert_to_tuple(line)).collect();
+
+    let fully_pairs: usize = pairs
+        .into_iter()
+        .filter(|pair| is_partial_in_other(pair.0, pair.1))
+        .count();
+
+    println!("Day04 - Task02 - Sum of partial included pairs: {}", fully_pairs);
+}
+
+
+fn convert_to_tuple(line: &str) -> ((i32, i32), (i32, i32)) {
+   let pairs: Vec<(i32, i32)> = line
+       .split(",")
+       .map(|pair|  {
+           let digits: Vec<i32> = pair.split("-").map(|digit| digit.parse::<i32>().unwrap()).collect();
+           return (digits[0], digits[1]);
+       })
+       .collect();
+
+    return (pairs[0], pairs[1]);
+}
+
+fn is_fully_in_other(first: (i32, i32), second: (i32,i32)) -> bool {
+    if first.0 <= second.0 && first.1 >= second.1 { // second is fully in first
+        return true;
+    }
+
+    if second.0 <= first.0 && second.1 >= first.1 { // first is fully in second
+        return true;
+    }
+
+    return false
+}
+
+fn is_partial_in_other(first: (i32, i32), second: (i32, i32)) -> bool {
+    if first.0 <= second.0 && first.1 >= second.0 { // 5-7, 6-9
+        return true
+    }
+
+    if first.0 >= second.0 && first.0 <= second.1 { // 6-9, 5-7
+        return true
+    }
+
+    return false
+}
+
diff --git a/src/input/day04/input01 b/src/input/day04/input01
new file mode 100644
index 0000000..ab66b7a
--- /dev/null
+++ b/src/input/day04/input01
@@ -0,0 +1,1000 @@
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\ No newline at end of file
diff --git a/src/main.rs b/src/main.rs
index f8519f0..40d5d0a 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -2,10 +2,12 @@ mod utils;
 mod day01;
 mod day02;
 mod day03;
+mod day04;
 
 const CONTENT01: &'static str = include_str!("input/day01/input01");
 const CONTENT02: &'static str = include_str!("input/day02/input01");
 const CONTENT03: &'static str = include_str!("input/day03/input01");
+const CONTENT04: &'static str = include_str!("input/day04/input01");
 
 fn main() {
     day01::execute_task01(&CONTENT01);
@@ -15,5 +17,8 @@ fn main() {
     day02::execute_task02(&CONTENT02);
 
     day03::execute_task01(&CONTENT03);
-    day03::execute_task02(&CONTENT03)
+    day03::execute_task02(&CONTENT03);
+
+    day04::execute_task01(&CONTENT04);
+    day04::execute_task02(&CONTENT04)
 }