Copy from github.com with solutions for days 1+2

2022/day01-part1/Cargo.toml

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+[package]
+name = "day01-part1"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

2022/day01-part1/src/main.rs

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+fn main() {
+    // Use command line arguments to specify the input filename.
+    let args: Vec<String> = std::env::args().collect();
+    if args.len() < 2 {
+        panic!("Usage: ./main <input-file>\nNo input file provided. Exiting.");
+    }
+
+    // Next, read the contents of the input file into a string for easier processing.
+    let input = std::fs::read_to_string(&args[1]).expect("Error opening file");
+    // Line-by-line processing is easiest.
+    let mut input = input.lines();
+
+    // --- TASK BEGIN ---
+
+    // Keep track of the largest calorie-count and the "current" calorie-count.
+    let mut max_cals = 0u32;
+    let mut cals = 0u32;
+
+    // Iterate line-by-line.
+    while let Some(line) = input.next() {
+        // println!("Line is: {line}");
+        match line.parse::<u32>() {
+            Ok(num) => cals += num,
+            Err(_) => {
+                // println!("{cals}");
+                max_cals = std::cmp::max(max_cals, cals);
+                cals = 0;
+            }
+        }
+    }
+    // println!("{cals}");
+    // Don't forget to check the very last block.
+    max_cals = std::cmp::max(max_cals, cals);
+
+    println!("Maximum calories: {max_cals}");
+}