1 files changed, 26 insertions, 0 deletions

diff --git a/2022/03/a.rs b/2022/03/a.rs
new file mode 100644
index 0000000..568546c
--- /dev/null
+++ b/2022/03/a.rs
@@ -0,0 +1,26 @@
+mod common;
+use common::*;
+
+fn get_rep_val(rucksack: &[u8]) -> i64 {
+    let mut seen = [false; 256];
+    let mid = rucksack.len()/2;
+    for i in 0..mid {
+        seen[rucksack[i] as usize] = true;
+    }
+    for i in mid..rucksack.len() {
+        if seen[rucksack[i] as usize] {
+            return value(rucksack[i] as char);
+        }
+    }
+    panic!("Could not find repeated char");
+}
+
+fn main() {
+    let mut sum = 0;
+    let mut line = String::new();
+    while std::io::stdin().read_line(&mut line).unwrap() > 0 {
+        sum += get_rep_val(line.as_bytes());
+        line.clear();
+    }
+    println!("{sum}");
+}