Completed day 1 of 2020 aoc

advent_of_code/2020/1/src/main.rs

@@ -0,0 +1,68 @@
+fn solve_1(input: &str) -> u32 {
+    let numbers: Vec<u32> = input
+        .lines()
+        .map(|number| number.parse::<u32>().unwrap())
+        .collect();
+
+    for n in numbers.iter() {
+        for m in numbers.iter() {
+            if n + m == 2020 {
+                return n * m;
+            }
+        }
+    }
+
+    return 0;
+}
+
+fn solve_2(input: &str) -> u32 {
+    let numbers: Vec<u32> = input
+        .lines()
+        .map(|number| number.parse::<u32>().unwrap())
+        .collect();
+
+    for n in numbers.iter() {
+        for m in numbers.iter() {
+            if n + m > 2020 {
+                continue;
+            }
+            for v in numbers.iter() {
+                if n + m + v == 2020 {
+                    return n * m * v;
+                }
+            }
+        }
+    }
+
+    return 0;
+}
+
+fn main() {
+    println!("Hello, this is Patrick!");
+
+    let input = include_str!("../input.txt");
+
+    let result_1 = solve_1(input);
+    println!("The magic number is {}", result_1);
+
+    let result_2 = solve_2(input);
+    println!("The bigger magic number is {}", result_2);
+}
+
+#[cfg(test)]
+
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_1() {
+        let test_input = include_str!("../test.txt");
+        assert_eq!(solve_1(test_input), 514579);
+    }
+
+    #[test]
+    fn test_2() {
+        let test_input = include_str!("../test.txt");
+        assert_eq!(solve_2(test_input), 241861950);
+    }
+}