Day 2

1 files changed, 24 insertions, 0 deletions

diff --git a/2017/src/bin/day02.rs b/2017/src/bin/day02.rs
new file mode 100644
index 0000000..07551a2
--- /dev/null
+++ b/2017/src/bin/day02.rs
@@ -0,0 +1,24 @@
+use std::io::{self, Read};
+
+fn solve1(input: &str) -> u32 {
+    let mut sum = 0;
+    for row in input.lines() {
+        let values = row.split_whitespace()
+            .map(str::parse::<u32>)
+            .map(Result::unwrap);
+        sum += values.clone().max().unwrap() - values.min().unwrap();
+    }
+    sum
+}
+
+fn main() {
+    let mut input = String::new();
+    io::stdin().read_to_string(&mut input).unwrap();
+
+    println!("Part 1: {}", solve1(&input));
+}
+
+#[test]
+fn part1() {
+    assert_eq!(18, solve1("5 1 9 5\n7 5 3\n2 4 6 8\n"));
+}