day7 part2

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Candygoblen123 2023-12-07 12:58:57 -05:00
parent 4a20a35c2d
commit 906b5c7254
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@ -8,13 +8,23 @@ fn main() {
for line in 0..input.len() {
let hand = input[line][0];
if hand == "JJJJJ" {
input[line].push("7");
continue;
}
let mut card_freq: HashMap<char, i16> = HashMap::new();
for card in hand.chars() {
let joker_count: i16 = hand.chars().filter(|c| c == &'J').count().try_into().unwrap();
for card in hand.chars().filter(|c| c != &'J') {
card_freq.entry(card)
.and_modify(|count| *count += 1)
.or_insert(1);
}
// The most helpful place for the jokers will always be with the max card count
let max = card_freq.clone().into_iter().max_by(|a, b| a.1.cmp(&b.1)).unwrap();
card_freq.entry(max.0)
.and_modify(|count| *count += joker_count);
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();
@ -71,16 +81,103 @@ fn card_value(card: char) -> i32 {
'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,
'T' => 10,
'9' => 9,
'8' => 8,
'7' => 7,
'6' => 6,
'5' => 5,
'4' => 4,
'3' => 3,
'2' => 2,
'J' => 1,
_ => panic!("invalid card")
}
}
}
// 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")
// }
// }