Added day 1

.gitignore

@@ -0,0 +1 @@
+/target

Cargo.lock

@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "aoc2015"
+version = "0.1.0"

Cargo.toml

@@ -0,0 +1,256 @@
+[package]
+name = "aoc2015"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+
+
+[[bin]]
+name = "d1-1"
+path = "src/day1/1.rs"
+
+
+[[bin]]
+name = "d1-2"
+path = "src/day1/2.rs"
+
+
+[[bin]]
+name = "d2-1"
+path = "src/day2/1.rs"
+
+
+[[bin]]
+name = "d2-2"
+path = "src/day2/2.rs"
+
+
+[[bin]]
+name = "d3-1"
+path = "src/day3/1.rs"
+
+
+[[bin]]
+name = "d3-2"
+path = "src/day3/2.rs"
+
+
+[[bin]]
+name = "d4-1"
+path = "src/day4/1.rs"
+
+
+[[bin]]
+name = "d4-2"
+path = "src/day4/2.rs"
+
+
+[[bin]]
+name = "d5-1"
+path = "src/day5/1.rs"
+
+
+[[bin]]
+name = "d5-2"
+path = "src/day5/2.rs"
+
+
+[[bin]]
+name = "d6-1"
+path = "src/day6/1.rs"
+
+
+[[bin]]
+name = "d6-2"
+path = "src/day6/2.rs"
+
+
+[[bin]]
+name = "d7-1"
+path = "src/day7/1.rs"
+
+
+[[bin]]
+name = "d7-2"
+path = "src/day7/2.rs"
+
+
+[[bin]]
+name = "d8-1"
+path = "src/day8/1.rs"
+
+
+[[bin]]
+name = "d8-2"
+path = "src/day8/2.rs"
+
+
+[[bin]]
+name = "d9-1"
+path = "src/day9/1.rs"
+
+
+[[bin]]
+name = "d9-2"
+path = "src/day9/2.rs"
+
+
+[[bin]]
+name = "d10-1"
+path = "src/day10/1.rs"
+
+
+[[bin]]
+name = "d10-2"
+path = "src/day10/2.rs"
+
+
+[[bin]]
+name = "d11-1"
+path = "src/day11/1.rs"
+
+
+[[bin]]
+name = "d11-2"
+path = "src/day11/2.rs"
+
+
+[[bin]]
+name = "d12-1"
+path = "src/day12/1.rs"
+
+
+[[bin]]
+name = "d12-2"
+path = "src/day12/2.rs"
+
+
+[[bin]]
+name = "d13-1"
+path = "src/day13/1.rs"
+
+
+[[bin]]
+name = "d13-2"
+path = "src/day13/2.rs"
+
+
+[[bin]]
+name = "d14-1"
+path = "src/day14/1.rs"
+
+
+[[bin]]
+name = "d14-2"
+path = "src/day14/2.rs"
+
+
+[[bin]]
+name = "d15-1"
+path = "src/day15/1.rs"
+
+
+[[bin]]
+name = "d15-2"
+path = "src/day15/2.rs"
+
+
+[[bin]]
+name = "d16-1"
+path = "src/day16/1.rs"
+
+
+[[bin]]
+name = "d16-2"
+path = "src/day16/2.rs"
+
+
+[[bin]]
+name = "d17-1"
+path = "src/day17/1.rs"
+
+
+[[bin]]
+name = "d17-2"
+path = "src/day17/2.rs"
+
+
+[[bin]]
+name = "d18-1"
+path = "src/day18/1.rs"
+
+
+[[bin]]
+name = "d18-2"
+path = "src/day18/2.rs"
+
+
+[[bin]]
+name = "d19-1"
+path = "src/day19/1.rs"
+
+
+[[bin]]
+name = "d19-2"
+path = "src/day19/2.rs"
+
+
+[[bin]]
+name = "d20-1"
+path = "src/day20/1.rs"
+
+
+[[bin]]
+name = "d20-2"
+path = "src/day20/2.rs"
+
+
+[[bin]]
+name = "d21-1"
+path = "src/day21/1.rs"
+
+
+[[bin]]
+name = "d21-2"
+path = "src/day21/2.rs"
+
+
+[[bin]]
+name = "d22-1"
+path = "src/day22/1.rs"
+
+
+[[bin]]
+name = "d22-2"
+path = "src/day22/2.rs"
+
+
+[[bin]]
+name = "d23-1"
+path = "src/day23/1.rs"
+
+
+[[bin]]
+name = "d23-2"
+path = "src/day23/2.rs"
+
+
+[[bin]]
+name = "d24-1"
+path = "src/day24/1.rs"
+
+
+[[bin]]
+name = "d24-2"
+path = "src/day24/2.rs"
+
+
+[[bin]]
+name = "d25-1"
+path = "src/day25/1.rs"
+
+
+[[bin]]
+name = "d25-2"
+path = "src/day25/2.rs"

src/day1/1.rs

@@ -0,0 +1,50 @@
+#![feature(test)]
+extern crate test;
+
+const INPUTS: [&str; 2] = [include_str!("./sample.txt"), include_str!("./input.txt")];
+
+fn parse(input: &'static str) -> Vec<char> {
+    input.trim().chars().collect()
+}
+
+fn solution(input: Vec<char>) -> i64 {
+    let mut answer = 0;
+
+    for c in input {
+        match c {
+            '(' => answer += 1,
+            ')' => answer -= 1,
+            _ => unreachable!(),
+        }
+    }
+
+    answer
+}
+
+fn main() {
+    for input in INPUTS.iter() {
+        let output = parse(input);
+        let output = solution(output);
+        println!("{output}");
+    }
+}
+
+#[test]
+fn solution_test() {
+    assert_eq!(solution("(())".chars().collect()), 0);
+    assert_eq!(solution("()()".chars().collect()), 0);
+    assert_eq!(solution("(((".chars().collect()), 3);
+    assert_eq!(solution("(()(()(".chars().collect()), 3);
+    assert_eq!(solution("))(((((".chars().collect()), 3);
+    assert_eq!(solution("())".chars().collect()), -1);
+    assert_eq!(solution(")())())".chars().collect()), -3);
+}
+
+#[bench]
+fn solution_bench(b: &mut test::Bencher) {
+    b.iter(|| {
+        let input = parse(INPUTS[1]);
+        let result = solution(input);
+        test::black_box(result);
+    })
+}

src/day1/2.rs

@@ -0,0 +1,49 @@
+#![feature(test)]
+extern crate test;
+
+const INPUTS: [&str; 2] = [include_str!("./sample.txt"), include_str!("./input.txt")];
+
+fn parse(input: &'static str) -> Vec<char> {
+    input.trim().chars().collect()
+}
+
+fn solution(input: Vec<char>) -> usize {
+    let mut answer = 0;
+
+    for (i, c) in input.into_iter().enumerate() {
+        match c {
+            '(' => answer += 1,
+            ')' => answer -= 1,
+            _ => unreachable!(),
+        }
+
+        if answer < 0 {
+            return i + 1;
+        }
+    }
+
+    0
+}
+
+fn main() {
+    for input in INPUTS.iter() {
+        let output = parse(input);
+        let output = solution(output);
+        println!("{output}");
+    }
+}
+
+#[test]
+fn solution_test() {
+    assert_eq!(solution(")".chars().collect()), 1);
+    assert_eq!(solution("()())".chars().collect()), 5);
+}
+
+#[bench]
+fn solution_bench(b: &mut test::Bencher) {
+    b.iter(|| {
+        let input = parse(INPUTS[1]);
+        let result = solution(input);
+        test::black_box(result);
+    })
+}

src/day1/sample.txt

@@ -0,0 +1 @@
+)())())