Day1 2023 done

1 files changed, 61 insertions, 0 deletions

diff --git a/2023/Rust/src/day1.rs b/2023/Rust/src/day1.rs
new file mode 100644
index 0000000..09cd49a
--- /dev/null
+++ b/2023/Rust/src/day1.rs
@@ -0,0 +1,61 @@
+fn solve_part_one(data: &str) -> u32 {
+    data.lines()
+        .map(|x| x.chars().filter(|ch| ch.is_digit(10)).collect::<String>())
+        .collect::<Vec<_>>()
+        .iter()
+        .map(|x| {
+            format!("{}{}", x.chars().nth(0).unwrap(), x.chars().last().unwrap())
+                .parse::<u32>()
+                .unwrap()
+        })
+        .sum()
+}
+
+fn solve_part_two(data: &str) -> u32 {
+    let nums = vec![
+        ("one", "1"),
+        ("two", "2"),
+        ("three", "3"),
+        ("four", "4"),
+        ("five", "5"),
+        ("six", "6"),
+        ("seven", "7"),
+        ("eight", "8"),
+        ("nine", "9"),
+    ];
+    let mut sum = 0;
+    for line in data.lines() {
+        let mut v = vec![];
+        for (lit, dig) in nums.iter() {
+            if let Some(idx) = line.find(lit) {
+                v.push((idx, dig));
+            }
+            if let Some(idx) = line.find(dig) {
+                v.push((idx, dig));
+            }
+            let line_rev = line.chars().rev().collect::<String>();
+            let lit_rev = lit.chars().rev().collect::<String>();
+            if let Some(idx) = line_rev.find(lit_rev.as_str()) {
+                v.push((line_rev.len() - idx - lit_rev.len(), dig));
+            }
+            if let Some(idx) = line_rev.find(dig) {
+                v.push((line_rev.len() - idx - 1, dig));
+            }
+        }
+        v.sort();
+        sum += format!("{}{}", v.first().unwrap().1, v.last().unwrap().1)
+            .parse::<u32>()
+            .unwrap();
+    }
+    sum
+}
+
+fn main() {
+    let test_1 = include_str!("../input/day1_1.test");
+    let test_2 = include_str!("../input/day1_2.test");
+    let prod = include_str!("../input/day1.prod");
+    println!("part_1 test: {:?}", solve_part_one(test_1));
+    println!("part_1 prod {:?}", solve_part_one(prod));
+    println!("part_2 test: {:?}", solve_part_two(test_2));
+    println!("part_2 prod {:?}", solve_part_two(prod));
+}