Implement a solution for day 6 part 1 and 2

day_06/java/Generic.java

@@ -0,0 +1,47 @@
+package day_06.java;
+
+import java.io.FileNotFoundException;
+import java.util.Scanner;
+
+import jlib.FileSystem;
+import jlib.Sequence;
+
+class Generic {
+	static Integer bufferSize;
+
+	public static void main(String[] args) {
+		if (args.length < 2) {
+			System.out.println("Not enough arguments");
+			return;
+		}
+
+		bufferSize = Integer.parseInt(args[1]);
+
+		Scanner s;
+		try {
+			s = FileSystem.readFile(args[0]);
+		} catch (FileNotFoundException e) {
+			System.out.println("Can't find the file");
+			return;
+		}
+
+		while (s.hasNextLine()) {
+			String line = s.nextLine();
+			Sequence<Character> buffer = new Sequence<>(bufferSize);
+
+			// Ensure the line has enough characters to make a marker
+			if (line.length() < 4) {
+				System.out.println("Not long enough to get a marker");
+			}
+
+			// Find the marker in the data
+			for (int i = 0; i < line.length(); i++) {
+				buffer.add(line.charAt(i));
+				if (buffer.size() == bufferSize && buffer.isUnique()) {
+					System.out.println("Found marker at character " + (i + 1));
+					break;
+				}
+			}
+		}
+	}
+}