From 7a99f86e0175e630b251d206ba0e50e8ef71b436 Mon Sep 17 00:00:00 2001
From: kirbylife <kirbylife@protonmail.com>
Date: Sat, 14 Dec 2024 00:49:27 -0600
Subject: [PATCH] Day 7 part 2
---
day-7/Main.java | 35 ++++++++++++++++++++++++++++++++---
1 file changed, 32 insertions(+), 3 deletions(-)
diff --git a/day-7/Main.java b/day-7/Main.java
index 030b87a..dfa4dba 100644
--- a/day-7/Main.java
+++ b/day-7/Main.java
@@ -18,12 +18,11 @@ public class Main {
this.values = v;
}
- boolean testIt() {
+ boolean part1() {
int possibleCombinations = (int) Math.pow(2, this.values.size());
for (int i = 0; i < possibleCombinations; i++) {
long newResult = this.values.get(0);
- String out = "" + newResult;
for (int j = 1; j < this.values.size(); j++) {
if ((i >> j) % 2 == 0) {
newResult += this.values.get(j);
@@ -37,6 +36,29 @@ public class Main {
}
return false;
}
+
+ boolean part2() {
+ int possibleCombinations = (int) Math.pow(3, this.values.size());
+
+ for (int i = 0; i < possibleCombinations; i++) {
+ long newResult = this.values.get(0);
+ for (int j = 1; j < this.values.size(); j++) {
+ long value = this.values.get(j);
+ long trin = ((long) (i / Math.pow(3, j)) % 3);
+ if (trin == 0) {
+ newResult += value;
+ } else if (trin == 1) {
+ newResult *= value;
+ } else {
+ newResult = Long.valueOf("" + newResult + value);
+ }
+ }
+ if (newResult == this.result) {
+ return true;
+ }
+ }
+ return false;
+ }
}
static ArrayList<Test> parseInput() {
@@ -63,8 +85,15 @@ public class Main {
public static void main(String args[]) {
ArrayList<Test> tests = parseInput();
- tests.removeIf(t -> !t.testIt());
+ tests.removeIf(t -> !t.part1());
long total = tests.stream().mapToLong(t -> t.result).sum();
+ System.out.println("Part 1");
+ System.out.println(total);
+
+ tests = parseInput();
+ tests.removeIf(t -> !t.part2());
+ total = tests.stream().mapToLong(t -> t.result).sum();
+ System.out.println("Part 2");
System.out.println(total);
}
}