From 382cb297ae29a8c453740d1ad3236cab74b88182 Mon Sep 17 00:00:00 2001
From: Nat Lasseter <user@4574.co.uk>
Date: Thu, 7 Dec 2023 16:56:23 +0000
Subject: Day 07 part 2

---
 day07/day07.java | 73 ++++++++++++++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 68 insertions(+), 5 deletions(-)

(limited to 'day07/day07.java')

diff --git a/day07/day07.java b/day07/day07.java
index 3f4ae88..6688f5e 100644
--- a/day07/day07.java
+++ b/day07/day07.java
@@ -32,15 +32,35 @@ public class day07 {
   }
 
   public static String part2(RandomAccessFile input) throws IOException {
-    return "WIP";
+    Game game = new Game(true);
+
+    String line;
+    while((line = input.readLine()) != null) {
+      game.parseHand(line);
+    }
+
+    game.rank();
+
+    long winnings = 0;
+    for (int i = 0; i < game.hands.size(); i++) {
+      winnings += ((i+1) * game.hands.get(i).bid);
+    }
+
+    return Long.toString(winnings);
   }
 }
 
 class Game {
   ArrayList<Hand> hands;
+  boolean wild;
 
   public Game() {
+    this(false);
+  }
+
+  public Game(boolean wild) {
     this.hands = new ArrayList<>();
+    this.wild = wild;
   }
 
   public void parseHand(String line) {
@@ -48,7 +68,8 @@ class Game {
     this.hands.add(
       new Hand(
         linea[0].toCharArray(),
-        Long.parseLong(linea[1])
+        Long.parseLong(linea[1]),
+        this.wild
       )
     );
   }
@@ -61,8 +82,10 @@ class Game {
 class Hand implements Comparable<Hand> {
   int[] cards;
   long bid;
+  boolean wild;
 
-  public Hand(char[] cards, long bid) {
+  public Hand(char[] cards, long bid, boolean wild) {
+    this.wild = wild;
     this.cards = new int[5];
     for(int i = 0; i < 5; i++) {
       switch (cards[i]) {
@@ -94,7 +117,7 @@ class Hand implements Comparable<Hand> {
           this.cards[i] = 10;
           break;
         case 'J':
-          this.cards[i] = 11;
+          this.cards[i] = this.wild ? 1 : 11;
           break;
         case 'Q':
           this.cards[i] = 12;
@@ -130,6 +153,45 @@ class Hand implements Comparable<Hand> {
     int[] s = this.cards.clone();
     Arrays.sort(s);
 
+    if (this.wild) {
+      if (s[0] == 1 && s[1] == 1 && s[2] == 1 && s[3] == 1) { //4 or 5 jokers
+        return 6; //5 of a kind
+      } else if (s[0] == 1 && s[1] == 1 && s[2] == 1) { //3 jokers
+        if (s[3] == s[4]) { //pair
+          return 6; //5oak
+        } else { //high
+          return 5; //4oak
+        }
+      } else if (s[0] == 1 && s[1] == 1) { //2 jokers
+        if (s[2] == s[3] && s[3] == s[4]) {//3oak
+          return 6; //5oak
+        } else if (s[2] == s[3] || s[3] == s[4]) { //pair
+          return 5; //4oak
+        } else { //high
+          return 3; //3oak
+        }
+      } else if (s[0] == 1) { //1 jokers
+        if (
+            s[1] == s[2] && s[2] == s[3] && s[3] == s[4] ) { //4oak
+          return 6; //5oak
+        } else if (
+            s[1] == s[2] && s[2] == s[3] ||
+            s[2] == s[3] && s[3] == s[4] ) { //3oak
+          return 5; //4oak
+        } else if (s[1] == s[2] && s[3] == s[4]) { //2pair
+          return 4; //full
+        } else if (
+            s[1] == s[2] ||
+            s[2] == s[3] ||
+            s[3] == s[4] ) { //pair
+          return 3; //3oak
+        } else { //high
+          return 1;
+        }
+      }
+    }
+
+    //0 jokers
     if (
         s[0] == s[1] && s[1] == s[2] && s[2] == s[3] && s[3] == s[4] ) {
       return 6;
@@ -157,7 +219,8 @@ class Hand implements Comparable<Hand> {
         s[2] == s[3] ||
         s[3] == s[4] ){
       return 1;
+    } else {
+      return 0;
     }
-    return 0;
   }
 }
-- 
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