first commit

2022/day1/src/main.rs

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+use std::fs::File;
+use std::io::prelude::*;
+use std::io::Result;
+use std::time::Instant;
+
+fn main() -> Result<()> {
+    let start_time = Instant::now();
+    let mut x = File::open("./data").expect("file not found");
+    let mut content = String::new();
+    x.read_to_string(&mut content)?;
+
+    // Part 1
+    let mut elf: Vec<i32> = content
+        .split("\n")
+        .collect::<Vec<&str>>()
+        .split(|line| line.is_empty())
+        .map(|line| line.iter().fold(0, |acc, x| acc + x.parse::<i32>().unwrap()))
+        .collect();
+
+    // Part 1 version 2
+    // let mut elf: Vec<i32> = content
+    //     .lines()
+    //     .map(|line| line.parse::<i32>().unwrap_or_default())
+    //     .collect::<Vec<i32>>()
+    //     .split(|line| *line == 0)
+    //     .map(|x| x.iter().fold(0, |acc, x| acc + x))
+    //     .collect();
+    println!("Elf with: {} Calories", elf.iter().max().unwrap());
+    let duration = start_time.elapsed();
+    println!("{:?}", duration);
+
+    // Part 2
+    elf.sort();
+    let max = elf.pop().unwrap();
+    let mid = elf.pop().unwrap();
+    let min = elf.pop().unwrap();
+    println!("{:?}", max + mid + min);
+    Ok(())
+}