Part 1

2022/rust/src/day3.rs

@@ -1,13 +1,39 @@
 mod common;
 
+use std::collections::HashSet;
+
 fn main() {
-    let input = common::day_input(2);
+    let input = common::day_input(3);
     println!("Part 1: {}", part1(&input));
     println!("Part 2: {}", part2(&input));
 }
 
 fn part1(input: &str) -> i32 {
-    0
+    let mut r = 0_i32;
+    for l in input.lines() {
+        println!("{}", l);
+        let mut s: HashSet<u8> = HashSet::new();
+        let bytes = l.as_bytes();
+        let mut n = 0;
+        let bar = bytes.len() / 2;
+        println!("{}", bar);
+        for b in bytes {
+            print!("{}.", b);
+            if s.contains(b) && n >= bar {
+                if *b >= 97 && *b <= 122 {
+                    r += (*b as i32) - 96;
+                } else {
+                    r += (*b as i32) - 65 + 27;
+                }
+                println!(" == {}", r);
+                break;
+            } else if n < bar {
+                s.insert(*b);
+            }
+            n += 1
+        }
+    }
+    return r;
 }
 
 fn part2(input: &str) -> i32 {
@@ -18,11 +44,16 @@ fn part2(input: &str) -> i32 {
 mod tests {
     use super::*;
 
-    const TEST_INPUT: &str = "";
+    const TEST_INPUT: &str = "vJrwpWtwJgWrhcsFMMfFFhFp
+jqHRNqRjqzjGDLGLrsFMfFZSrLrFZsSL
+PmmdzqPrVvPwwTWBwg
+wMqvLMZHhHMvwLHjbvcjnnSBnvTQFn
+ttgJtRGJQctTZtZT
+CrZsJsPPZsGzwwsLwLmpwMDw";
 
     #[test]
     fn test_part1() {
-        assert_eq!(part1(TEST_INPUT), 0)
+        assert_eq!(part1(TEST_INPUT), 157)
     }
 
     #[test]