6 files changed, 379 insertions, 0 deletions
diff --git a/2022/day3/example b/2022/day3/example
new file mode 100644
index 0000000..f17e726
--- /dev/null
+++ b/2022/day3/example
@@ -0,0 +1,6 @@
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diff --git a/2022/day3/input b/2022/day3/input
new file mode 100644
index 0000000..e5e3940
--- /dev/null
+++ b/2022/day3/input
@@ -0,0 +1,300 @@
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diff --git a/2022/day3/part1/Cargo.toml b/2022/day3/part1/Cargo.toml
new file mode 100644
index 0000000..f14fe90
--- /dev/null
+++ b/2022/day3/part1/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "part1"
+version = "0.1.0"
+edition = "2021"
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[dependencies]
+itertools = "0.10.5"
diff --git a/2022/day3/part1/src/main.rs b/2022/day3/part1/src/main.rs
new file mode 100644
index 0000000..2de2ce8
--- /dev/null
+++ b/2022/day3/part1/src/main.rs
@@ -0,0 +1,24 @@
+use std::collections::HashSet;
+fn main() {
+    let rucksacks: Vec<(&str, &str)> = include_str!("../../input")
+        .lines()
+        .map(|line| line.split_at(line.len() / 2))
+        .collect();
+    let mut sum = 0;
+    for (f, s) in rucksacks {
+        let first: HashSet<char> = HashSet::from_iter(f.chars());
+        let second: HashSet<char> = HashSet::from_iter(s.chars());
+        for x in first.intersection(&second) {
+            if x.is_lowercase() {
+                sum += *x as i16 - 96;
+            } else {
+                sum += *x as i16 - 38;
+            }
+        }
+    }
+    println!("{}", sum);
+}
diff --git a/2022/day3/part2/Cargo.toml b/2022/day3/part2/Cargo.toml
new file mode 100644
index 0000000..69fa504
--- /dev/null
+++ b/2022/day3/part2/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "part2"
+version = "0.1.0"
+edition = "2021"
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[dependencies]
+itertools = "0.10.5"
diff --git a/2022/day3/part2/src/main.rs b/2022/day3/part2/src/main.rs
new file mode 100644
index 0000000..7139eb0
--- /dev/null
+++ b/2022/day3/part2/src/main.rs
@@ -0,0 +1,31 @@
+use itertools::Itertools;
+use std::collections::HashMap;
+use std::collections::HashSet;
+fn main() {
+    let mut sum = 0;
+    for group in &include_str!("../../input").lines().chunks(3) {
+        let mut membership: HashMap<char, usize> = HashMap::new();
+        for rucksack in group {
+            let mut items: HashSet<char> = HashSet::new();
+            for item in &rucksack.chars().chunks(2) {
+                for c in item {
+                    items.insert(c);
+                }
+            }
+            for c in &items {
+                *membership.entry(c.to_owned()).or_default() += 1;
+            }
+        }
+        for (item, value) in membership {
+            if value == 3 {
+                if item.is_lowercase() {
+                    sum += item as i16 - 96;
+                } else {
+                    sum += item as i16 - 38;
+                }
+            }
+        }
+    }
+    println!("{}", sum);
+}

diff --git a/2022/day3/example b/2022/day3/example new file mode 100644 index 0000000..f17e726 --- /dev/null +++ b/2022/day3/example
@@ -0,0 +1,6 @@
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	5	ttgJtRGJQctTZtZT
	6	CrZsJsPPZsGzwwsLwLmpwMDw


diff --git a/2022/day3/input b/2022/day3/input new file mode 100644 index 0000000..e5e3940 --- /dev/null +++ b/2022/day3/input
@@ -0,0 +1,300 @@
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diff --git a/2022/day3/part1/Cargo.toml b/2022/day3/part1/Cargo.toml new file mode 100644 index 0000000..f14fe90 --- /dev/null +++ b/2022/day3/part1/Cargo.toml
@@ -0,0 +1,9 @@
	1	[package]
	2	name = "part1"
	3	version = "0.1.0"
	4	edition = "2021"
	5
	6	# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
	7
	8	[dependencies]
	9	itertools = "0.10.5"


diff --git a/2022/day3/part1/src/main.rs b/2022/day3/part1/src/main.rs new file mode 100644 index 0000000..2de2ce8 --- /dev/null +++ b/2022/day3/part1/src/main.rs
@@ -0,0 +1,24 @@
	1	use std::collections::HashSet;
	2
	3	fn main() {
	4	let rucksacks: Vec<(&str, &str)> = include_str!("../../input")
	5	.lines()
	6	.map(\|line\| line.split_at(line.len() / 2))
	7	.collect();
	8
	9	let mut sum = 0;
	10	for (f, s) in rucksacks {
	11	let first: HashSet<char> = HashSet::from_iter(f.chars());
	12	let second: HashSet<char> = HashSet::from_iter(s.chars());
	13
	14	for x in first.intersection(&second) {
	15	if x.is_lowercase() {
	16	sum += *x as i16 - 96;
	17	} else {
	18	sum += *x as i16 - 38;
	19	}
	20	}
	21	}
	22
	23	println!("{}", sum);
	24	}


diff --git a/2022/day3/part2/Cargo.toml b/2022/day3/part2/Cargo.toml new file mode 100644 index 0000000..69fa504 --- /dev/null +++ b/2022/day3/part2/Cargo.toml
@@ -0,0 +1,9 @@
	1	[package]
	2	name = "part2"
	3	version = "0.1.0"
	4	edition = "2021"
	5
	6	# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
	7
	8	[dependencies]
	9	itertools = "0.10.5"


diff --git a/2022/day3/part2/src/main.rs b/2022/day3/part2/src/main.rs new file mode 100644 index 0000000..7139eb0 --- /dev/null +++ b/2022/day3/part2/src/main.rs
@@ -0,0 +1,31 @@
	1	use itertools::Itertools;
	2	use std::collections::HashMap;
	3	use std::collections::HashSet;
	4
	5	fn main() {
	6	let mut sum = 0;
	7	for group in &include_str!("../../input").lines().chunks(3) {
	8	let mut membership: HashMap<char, usize> = HashMap::new();
	9	for rucksack in group {
	10	let mut items: HashSet<char> = HashSet::new();
	11	for item in &rucksack.chars().chunks(2) {
	12	for c in item {
	13	items.insert(c);
	14	}
	15	}
	16	for c in &items {
	17	*membership.entry(c.to_owned()).or_default() += 1;
	18	}
	19	}
	20	for (item, value) in membership {
	21	if value == 3 {
	22	if item.is_lowercase() {
	23	sum += item as i16 - 96;
	24	} else {
	25	sum += item as i16 - 38;
	26	}
	27	}
	28	}
	29	}
	30	println!("{}", sum);
	31	}