Implement 2025 - Day 6 - Part 1

2025/06.rs

@@ -0,0 +1,41 @@
+---cargo
+---
+
+static CONTENT: &'static str = include_str!("./inputs/06_1.txt");
+
+#[derive(Debug, PartialEq, Clone)]
+enum Operation {
+    Add,
+    Mul,
+}
+
+fn main() {
+    let raw_grid: Vec<_> = CONTENT.lines().map(|l| l.trim()).filter(|l| !l.is_empty()).map(|l| {
+        l.split(' ').map(|c| c.trim()).filter(|c| !c.is_empty()).collect::<Vec<_>>()
+    }).collect();
+
+    println!("Raw-Grid\n{:?}", raw_grid);
+
+    let mut result = 0;
+
+    let problem_count = raw_grid[0].len();
+    for p_idx in 0..problem_count {
+        let op = match raw_grid.last().map(|r| r[p_idx]) {
+            Some("+") => Operation::Add,
+            Some("*") => Operation::Mul,
+            other => unreachable!("Unexpected Operation {:?}", other),
+        };
+
+        let elem_iter = raw_grid.iter().take(raw_grid.len()-1).map(|r| r[p_idx]).map(|v| v.parse::<usize>().unwrap());
+
+        let value = match op {
+            Operation::Add => elem_iter.sum::<usize>(),
+            Operation::Mul => elem_iter.product::<usize>()
+        };
+        println!("V {}", value);
+
+        result += value;
+    }
+
+    println!("Result {}", result);
+}