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Day6.java
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Day6.java
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import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.IntStream;
public class Day6 {
List<String> l1 = new ArrayList<>();
private static <T> T readFile(Function<BufferedReader, T> runner) throws FileNotFoundException, IOException{
try(BufferedReader br = new BufferedReader(new FileReader("input_6.txt"))) {
return runner.apply(br);
}
}
public static Integer firstQuestion() throws FileNotFoundException, IOException{
Function<BufferedReader, Integer> test = (br) -> {
List<Character> list = new ArrayList<>();
String line;
try {
line = br.readLine();
while (line != null) {
char[] chars = line.toCharArray();
for (int i = 0; i < chars.length; i++) {
if (list.contains(chars[i])){
System.out.println("cleared: "+ chars[i] + ": " + list.stream().map(String::valueOf).collect(Collectors.joining("")));
int index = list.indexOf(chars[i]);
list.subList(0, index+1).clear();
}
list.add(chars[i]);
if (list.size() == 4){
System.out.println("Result: " + list.stream().map(String::valueOf).collect(Collectors.joining("")));
return i+1;
}
}
line = br.readLine();
}
return 0;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
};
return readFile(test);
}
public static Integer secondQuestion() throws FileNotFoundException, IOException{
Function<BufferedReader, Integer> test = (br) -> {
List<Character> list = new ArrayList<>();
String line;
try {
line = br.readLine();
while (line != null) {
char[] chars = line.toCharArray();
for (int i = 0; i < chars.length; i++) {
if (list.contains(chars[i])){
System.out.println("cleared: "+ chars[i] + ": " + list.stream().map(String::valueOf).collect(Collectors.joining("")));
int index = list.indexOf(chars[i]);
list.subList(0, index+1).clear();
}
list.add(chars[i]);
if (list.size() == 14){
System.out.println("Result: " + list.stream().map(String::valueOf).collect(Collectors.joining("")));
return i+1;
}
}
line = br.readLine();
}
return 0;
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return null;
};
return readFile(test);
}
public static void main(String[] args) throws IOException {
System.out.println("Score: " + firstQuestion());
System.out.println("Score: " + secondQuestion());
}
}