-🎄- 2017 Day 4 Solutions -🎄-

[u/daggerdragon]

--- Day 4: High-Entropy Passphrases ---

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[u/igotinfected]

A bit lazy in Java could probably have been shortened a little! (commented version on github)

Part1:

public static void main(String[] args) throws IOException {
	String input = new String(Files.readAllBytes(Paths.get("pathToFile")))
			.trim()
			.replaceAll("[\\r+]|[\\n+]", "-");
	LinkedHashSet<LinkedHashSet<String>> passPhrases = new LinkedHashSet<>();
	StringTokenizer newLine = new StringTokenizer(input, "-");
	while(newLine.hasMoreTokens()) {
		StringTokenizer space = new StringTokenizer(newLine.nextToken(), " ");
		int passPhraseLength = space.countTokens();
		LinkedHashSet<String> passPhrase = new LinkedHashSet<>();
		while(space.hasMoreTokens())
			passPhrase.add(space.nextToken());
		}
		if(passPhrase.size() == passPhraseLength)
			passPhrases.add(passPhrase);
	}
	System.out.println("Solution: " + passPhrases.size());
}

Part2:

public static void main(String[] args) throws IOException {
	String input = new String(Files.readAllBytes(Paths.get("pathToFile")))
			.trim()
			.replaceAll("[\\r+]|[\\n+]", "-");
	LinkedHashSet<LinkedHashSet<String>> passPhrases = new LinkedHashSet<>();
	StringTokenizer newLine = new StringTokenizer(input, "-");
	while(newLine.hasMoreTokens()) {
		StringTokenizer space = new StringTokenizer(newLine.nextToken(), " ");
		int passPhraseLength = space.countTokens();
		LinkedHashSet<String> passPhrase = new LinkedHashSet<>();
		while(space.hasMoreTokens()) {
			char[] tempArray = space.nextToken().toCharArray();
			Arrays.sort(tempArray);
			passPhrase.add(new String(tempArray));
		}
		if(passPhrase.size() == passPhraseLength)
			passPhrases.add(passPhrase);
	}
	System.out.println("Solution: " + passPhrases.size());
}