add day15 pt1

1 files changed, 56 insertions, 0 deletions

diff --git a/2023/day15/src/lib.rs b/2023/day15/src/lib.rs
new file mode 100644
index 0000000..e9d36eb
--- /dev/null
+++ b/2023/day15/src/lib.rs
@@ -0,0 +1,56 @@
+pub fn part1(input: &str) -> u32 {
+    let mut res: u32 = 0;
+
+    let inputs: Vec<String> = input.trim_end().split(',').map(|x| x.to_string()).collect();
+
+    for i in inputs {
+        let mut s = 0;
+        for ch in i.chars() {
+            s += ch as u32;
+            s *= 17;
+            s %= 256;
+        }
+        res += s;
+    }
+
+    res
+}
+
+pub fn part2(input: &str) -> u32 {
+    let mut res: u32 = 0;
+
+    res
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn example_part1() {
+        let input = include_str!("../example.txt");
+        let result = part1(input);
+        assert_eq!(result, 1320);
+    }
+
+    #[test]
+    fn input_part1() {
+        let input = include_str!("../input.txt");
+        let result = part1(input);
+        assert_eq!(result, 2331);
+    }
+
+    // #[test]
+    // fn example_part2() {
+    //     let input = include_str!("../example.txt");
+    //     let result = part2(input);
+    //     assert_eq!(result, 2286);
+    // }
+    //
+    // #[test]
+    // fn input_part2() {
+    //     let input = include_str!("../input.txt");
+    //     let result = part2(input);
+    //     assert_eq!(result, 71585);
+    // }
+}