Add day1

1 files changed, 25 insertions, 0 deletions

diff --git a/day1/src/main.rs b/day1/src/main.rs
new file mode 100644
index 0000000..ed6c56c
--- /dev/null
+++ b/day1/src/main.rs
@@ -0,0 +1,25 @@
+use std::fs::File;
+use std::io::prelude::*;
+use std::io::BufReader;
+
+fn main() {
+    let file = File::open("input.txt").expect("File not found");
+    let reader = BufReader::new(file);
+    let values: Vec<i32> = reader
+        .lines()
+        .map(|x| x.unwrap().parse::<i32>().unwrap())
+        .collect::<Vec<i32>>();
+    let mut increasing: u16 = 0;
+
+    for (index, _) in values.iter().enumerate() {
+        if index == 0 {
+            continue;
+        }
+
+        if values[index - 1] < values[index] {
+            increasing += 1;
+        }
+    }
+
+    println!("{}", increasing);
+}