Function advent_solutions::advent2017::day04::is_valid_part2

pub fn is_valid_part2(passphrase: &str) -> bool

For added security, yet another system policy has been put in place. Now, a valid passphrase must contain no two words that are anagrams of each other - that is, a passphrase is invalid if any word's letters can be rearranged to form any other word in the passphrase.

For example:

• abcde fghij is a valid passphrase.

  assert_eq!(is_valid_part2("abcde fghij"), true);

• abcde xyz ecdab is not valid - the letters from the third word can be rearranged to form the first word.

  assert_eq!(is_valid_part2("abcde xyz ecdab"), false);

• a ab abc abd abf abj is a valid passphrase, because all letters need to be used when forming another word.

  assert_eq!(is_valid_part2("a ab abc abd abf abj"), true);

• iiii oiii ooii oooi oooo is valid.

  assert_eq!(is_valid_part2("iiii oiii ooii oooi oooo"), true);

• oiii ioii iioi iiio is not valid - any of these words can be rearranged to form any other word.

  assert_eq!(is_valid_part2("oiii ioii iioi iiio"), false);