day2part2

day2/src/main.rs

@@ -1,3 +1,37 @@
+use std::{fs, cmp::max};
+
+fn main() {
+    let input = fs::read_to_string("input.txt").unwrap();
+    let input: Vec<_> = input.split('\n').collect();
+    let mut sum = 0;
+    for line in input {
+        let split:Vec<_> = line.split(':').collect();
+        let rounds: Vec<_> = split.last().unwrap().split(';').collect();
+        let rounds: Vec<_> = rounds.iter().map(|x| x.split(',').collect::<Vec<_>>()).collect();
+        let rounds: Vec<_> = rounds.iter().map(|x| x.iter().map(|x| x.trim().split(' ').collect::<Vec<_>>()).collect::<Vec<_>>()).collect();
+        let (mut r_max, mut g_max, mut b_max) = (0, 0, 0);
+        for round in rounds {
+            for set in round {
+                let color = set.last().unwrap();
+                let num: i32 = set.first().unwrap().parse().unwrap();
+                match *color {
+                    "red" => r_max = max(num, r_max),
+                    "blue" => b_max = max(num, b_max),
+                    "green" => g_max = max(num, g_max),
+                    &_ => todo!()
+                }
+            }
+
+        }
+        //println!("{}", r_max);
+        sum += r_max * g_max * b_max;
+    }
+    println!("{}", sum);
+
+}
+
+
+
 // use std::fs;
 
 // fn main() {