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  1. Practice
  2. Algorithms
  3. Strings
  4. Game of Thrones - I
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Game of Thrones - I

  • hvas89
     + 0 comments

    My solution is similar, but I added a condition at the beginning of the loop to make it quit as soon as we know there is no chance for it to be a palindrome :)

    HashSet<Character> hashSet = new HashSet<Character>();
for(int i=0;i<word.length();i++){
    if(hashSet.size() > (word.length()-i) + 1) return false;
    char character = word.charAt(i);
    if(hashSet.contains(character)){
        hashSet.remove(character);
    }else{
        hashSet.add(character);
    }
}
return hashSet.size() == word.length()%2;