pad numbers on directory names

day04/src/main.rs

@@ -0,0 +1,25 @@
+use std::env;
+use std::fs;
+
+fn main() {
+    let input = fs::read_to_string(&env::args().nth(1).unwrap()).unwrap();
+    let mut sum = 0;
+
+    for line in input.lines() {
+        let (s1, e1, s2, e2) = readline(line);
+        if s1 <= e2 && s2 <= e1 {
+            sum += 1;
+        }
+    }
+
+    println!("Total: {}", sum);
+}
+
+fn readline(line: &str) -> (i64, i64, i64, i64) {
+    let nums: Vec<i64> = line
+        .split(['-', ','])
+        .map(|line| line.parse::<i64>().unwrap())
+        .collect();
+    (nums[0], nums[1], nums[2], nums[3])
+}
+

day04/src/main1.rs

@@ -0,0 +1,25 @@
+use std::env;
+use std::fs;
+
+fn main() {
+    let input = fs::read_to_string(&env::args().nth(1).unwrap()).unwrap();
+    let mut sum = 0;
+
+    for line in input.lines() {
+        let (s1, e1, s2, e2) = readline(line);
+        if (s1 <= s2 && e1 >= e2) || (s1 >= s2 && e1 <= e2) {
+            sum += 1;
+        }
+    }
+
+    println!("Total: {}", sum);
+}
+
+fn readline(line: &str) -> (i64, i64, i64, i64) {
+    let nums: Vec<i64> = line
+        .split(['-', ','])
+        .map(|line| line.parse::<i64>().unwrap())
+        .collect();
+    (nums[0], nums[1], nums[2], nums[3])
+}
+