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Day04.java
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Day04.java
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//part 1
package org.thehuglio;
import java.io.File;
import java.util.*;
public class Main {
private static final List<String> data = new Reader(new File("data.txt")).data;
public static void main(String[] args) {
int tot = 0;
for (String datas : data) {
String[] split = datas.split(":")[1].split("\\| ");
List<String> winners = Arrays.asList(split[0].split(" "));
int totalwinners = 0;
for (String s : split[1].split(" ")) {
if (!s.equals("")) {
if (winners.contains(s)) {
totalwinners++;
}
}
}
if (totalwinners > 0) {
int score = 1;
for (int i = 1; i < totalwinners; i++) {
score *= 2;
}
tot += score;
}
}
System.out.println(tot);
}
}
//part 2
package org.thehuglio;
import org.thehuglio.Reader;
import java.io.File;
import java.util.*;
public class Main {
private static final List<String> data = new Reader(new File("data.txt")).data;
public static void main(String[] args) {
int tot = 0;
int[] gamesafe = new int[data.size()];
Arrays.fill(gamesafe, 1);
for (int i = 1; i <= data.size(); i++) {
String[] split = data.get(i - 1).split(":")[1].split("\\| ");
List<String> winners = Arrays.asList(split[0].split(" "));
int gamepointer = i;
for (String s : split[1].split(" ")) {
if (!s.equals("")) {
if (winners.contains(s)) {
gamesafe[gamepointer] += gamesafe[i - 1];
gamepointer++;
}
}
}
}
for (int i : gamesafe) {
tot += i;
}
System.out.println(tot);
}
}