day15

1 files changed, 21 insertions, 0 deletions

diff --git a/src/day15pt1.rs b/src/day15pt1.rs
new file mode 100644
index 0000000..ff76f54
--- /dev/null
+++ b/src/day15pt1.rs
@@ -0,0 +1,21 @@
+fn hash(s: String) -> u64 {
+    let mut sum: u64 = 0;
+    for c in s.chars() {
+        sum += c as u64;
+        sum *= 17;
+        sum %= 256;
+    }
+    return sum;
+}
+
+pub fn main() {
+    let txt = std::fs::read_to_string("./input/day15.txt").unwrap();
+
+    let mut sum: u64 = 0;
+    let input = txt.trim().split(",");
+    for s in input {
+        sum += hash(s.to_string());
+    }
+
+    println!("{}", sum);
+}