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  1. Prepare
  2. Algorithms
  3. Strings
  4. Game of Thrones - I
  5. Discussions

Game of Thrones - I

  • dorirgob
     + 0 comments

    The odd even check is actually unnecessary I've just figured. You can skip that part but the logic is pretty much the same. Java: 

    public static String gameOfThrones(String s) {
  int n = s.length();
  if (n == 0) {
    return "NO";
  } else if (n == 1) {
    return "YES";
  }
  int[] alphabet = new int[26];

  for (char c : s.toCharArray()) {
    alphabet[c - 'a']++;
  }
  if (n % 2 == 0) {
    for (int freq : alphabet) {
      if (freq % 2 != 0) {
        return "NO";
      }
    }
    return "YES";
  } else {
    int oddCount = 0;
    for (int freq : alphabet) {
      if (freq % 2 != 0) {
        oddCount++;
      }
    }
    if (oddCount == 1) {
      return "YES";
    } else {
      return "NO";
    }
  }
}
}