day4 part2

day4/Cargo.toml

@@ -5,4 +5,4 @@ edition = "2021"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
-[dependencies]
+[dependencies]

day4/src/main.rs

@@ -1,4 +1,5 @@
 use std::fs;
+use std::collections::VecDeque;
 
 fn main() {
     let input = fs::read_to_string("input.txt").unwrap();
@@ -20,27 +21,79 @@ fn main() {
         })
         .collect();
 
-    let mut total_pts = 0;
-    for card in input {
-        let mut card_pts = 0;
+    let mut queue = VecDeque::from((0..input.len()).collect::<Vec<usize>>());
+
+    let mut total_cards = 0;
+    while !queue.is_empty() {
+        let card_num = queue.pop_front().unwrap();
+        let card = input.get(card_num).unwrap();
+        total_cards += 1;
+        let mut dup_cards = 0;
         let winning_nums = card.first().unwrap();
         let our_nums = card.last().unwrap();
 
+        //dp would kill here, but im lazy
         for num in our_nums {
             if winning_nums.contains(num) {
-                if card_pts == 0 {
-                    card_pts = 1;
-                } else {
-                    card_pts *= 2;
-                }
+                dup_cards += 1;
+            }
+        }
+        for card in (card_num + 1)..=(card_num + dup_cards) {
+            if card < input.len() {
+                queue.push_back(card);
             }
         }
-
-        //println!("{}", card_pts);
-        total_pts += card_pts;
     }
 
 
 
-    println!("{:?}", total_pts);
+    println!("{:?}", total_cards);
 }
+
+
+// use std::fs;
+
+// fn main() {
+//     let input = fs::read_to_string("input.txt").unwrap();
+
+//     // an array in this format [[card 1: [winning nums][ our nums]]]
+//     let input: Vec<_> = input.split('\n') // split days
+//         .map(|card| &card[(card.find(':').unwrap() + 1)..]) // remove day numbers
+//         .map(|card| card.trim()) // trim extra whitespace
+//         .map(|card| {
+//             card.split('|') // split winning/own numbers
+//             .map(|numbers| {
+//                 numbers.trim() // trim whitespace
+//                 .split(' ') // split into individual nums
+//                 .filter(|x| !x.is_empty()) // remove empty strings
+//                 .map(|x| {return x.parse::<i32>().unwrap()}) // convert to i32
+//                 .collect::<Vec<_>>()
+//             })
+//             .collect::<Vec<_>>()
+//         })
+//         .collect();
+
+//     let mut total_pts = 0;
+//     for card in input {
+//         let mut card_pts = 0;
+//         let winning_nums = card.first().unwrap();
+//         let our_nums = card.last().unwrap();
+
+//         for num in our_nums {
+//             if winning_nums.contains(num) {
+//                 if card_pts == 0 {
+//                     card_pts = 1;
+//                 } else {
+//                     card_pts *= 2;
+//                 }
+//             }
+//         }
+
+//         //println!("{}", card_pts);
+//         total_pts += card_pts;
+//     }
+
+
+
+//     println!("{:?}", total_pts);
+// }