Reorganizing for day2

2018/src/day1.rs

@@ -0,0 +1,35 @@
+use std::collections;
+use std::str;
+
+const INPUT: &str = include_str!("input/day1.txt");
+
+pub fn part1() -> i64 {
+    let mut freq = 0;
+    for line in str::lines(INPUT) {
+        match line.parse::<i64>() {
+            Ok(d) => freq += d,
+            Err(s) => println!("{}", s),
+        }
+    }
+    freq
+}
+
+pub fn part2() -> i64 {
+    let mut freqs = collections::HashSet::new();
+    let mut freq = 0;
+    freqs.insert(freq);
+    loop {
+        for line in str::lines(INPUT) {
+            match line.parse::<i64>() {
+                Ok(d) => {
+                    freq += d;
+                    if freqs.contains(&freq) {
+                        return freq;
+                    }
+                    freqs.insert(freq);
+                }
+                Err(s) => println!("{}", s),
+            }
+        }
+    }
+}