day07/Cargo.lock

@@ -1,7 +0,0 @@
-# This file is automatically @generated by Cargo.
-# It is not intended for manual editing.
-version = 3
-
-[[package]]
-name = "day07"
-version = "0.1.0"

day07/Cargo.toml

@@ -1,8 +0,0 @@
-[package]
-name = "day07"
-version = "0.1.0"
-edition = "2021"
-
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
-
-[dependencies]

day07/src/main.rs

@@ -1,86 +0,0 @@
-use std::{fs, collections::HashMap};
-
-fn main() {
-    let input = fs::read_to_string("input.txt").unwrap();
-    let mut input: Vec<_> = input.split('\n')
-        .map(|line| line.split(' ').collect::<Vec<_>>())
-        .collect();
-
-    for line in 0..input.len() {
-        let hand = input[line][0];
-        let mut card_freq: HashMap<char, i16> = HashMap::new();
-        for card in hand.chars() {
-            card_freq.entry(card)
-                .and_modify(|count| *count += 1)
-                .or_insert(1);
-        }
-
-        let mut set_count: HashMap<i16, i16> = HashMap::new();
-        for i in 1..=5 {
-            let card_count = card_freq.values().filter(|x| **x == i).count().try_into().unwrap();
-            if card_count != 0 {
-                set_count.insert(i, card_count);
-            }
-        }
-
-        let power = match set_count {
-            x if x.contains_key(&5) => "7",
-            x if x.contains_key(&4) => "6",
-            x if x.contains_key(&3) && x.contains_key(&2) => "5",
-            x if x.contains_key(&3) => "4",
-            x if x.get(&2).unwrap_or(&0) >= &2 => "3",
-            x if x.get(&2).unwrap_or(&0) == &1 => "2",
-            HashMap { .. } => "1"
-        };
-
-        input[line].push(power);
-    }
-
-    input.sort_by(|lhs, rhs| {
-        let lhs_power: i32 = lhs[2].parse().unwrap();
-        let rhs_power: i32 = rhs[2].parse().unwrap();
-        if lhs_power != rhs_power {
-            return lhs_power.cmp(&rhs_power);
-        }
-
-        let lhs_hand: Vec<i32> = lhs[0].chars().map(card_value).collect();
-        let rhs_hand: Vec<i32> = rhs[0].chars().map(card_value).collect();
-        for i in 0..5 {
-            if lhs_hand[i] == rhs_hand[i] { continue; }
-            return lhs_hand[i].cmp(&rhs_hand[i]);
-        }
-
-        panic!("Should not be reachable");
-    });
-
-
-    let mut total_winnings = 0;
-    for i in 0..input.len() {
-        let bid: usize = input[i][1].parse().unwrap();
-        total_winnings += (i + 1) * bid;
-    }
-
-    println!("{}", total_winnings);
-
-
-}
-
-
-fn card_value(card: char) -> i32 {
-    match card {
-        'A' => 13,
-        'K' => 12,
-        'Q' => 11,
-        'J' => 10,
-        'T' => 9,
-        '9' => 8,
-        '8' => 7,
-        '7' => 6,
-        '6' => 5,
-        '5' => 4,
-        '4' => 3,
-        '3' => 2,
-        '2' => 1,
-        _ => panic!("invalid card")
-    }
-}