Added 2022, first few problems

3 files changed, 35 insertions, 0 deletions

diff --git a/2022/01/a.rs b/2022/01/a.rs
new file mode 100644
index 0000000..77e57e4
--- /dev/null
+++ b/2022/01/a.rs
@@ -0,0 +1,8 @@
+mod common;
+use common::*;
+
+fn main() {
+    let e = get_elves_from_stdin();
+    let m: i64 = e.iter().map(|a| a.iter().sum()).max().unwrap();
+    println!("{m}");
+}
diff --git a/2022/01/b.rs b/2022/01/b.rs
new file mode 100644
index 0000000..ca0b324
--- /dev/null
+++ b/2022/01/b.rs
@@ -0,0 +1,9 @@
+mod common;
+use common::*;
+
+fn main() {
+    let e = get_elves_from_stdin();
+    let mut w = e.iter().map(|a| a.iter().sum()).collect::<Vec<i64>>();
+    w.sort_by(|a, b| b.cmp(a));
+    println!("{}", w[0] + w[1] + w[2]);
+}
diff --git a/2022/01/common.rs b/2022/01/common.rs
new file mode 100644
index 0000000..8ed8b49
--- /dev/null
+++ b/2022/01/common.rs
@@ -0,0 +1,18 @@
+pub fn get_elves_from_stdin() -> Vec<Vec<i64>> {
+    let mut e = Vec::<Vec::<i64>>::new();
+    e.push(Vec::<i64>::new());
+    let mut line = String::new();
+    loop {
+        match std::io::stdin().read_line(&mut line).unwrap() {
+            0 => break,
+            1 => e.push(Vec::<i64>::new()),
+            _ => {
+                let n = line.trim().parse::<i64>().unwrap();
+                let last = e.len() - 1;
+                e[last].push(n);
+            }
+        }
+        line.clear();
+    }
+    e
+}