gistfile1.java

import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class GameOfThronesWarmup {

    public static void main(String[] args) {
        Scanner myScan = new Scanner(System.in);
        String inputString = myScan.nextLine();
       
        String ans = "";
        char[] splittedInput = inputString.toCharArray();
        Hashtable<Character, Integer> table = new Hashtable<Character, Integer>();
        for (int i = 0; i < splittedInput.length; i++) {
            System.out.println(splittedInput[i]);
            if (!table.contains(splittedInput[i])) {
                System.out.println("new character");
                table.put(splittedInput[i], 1);
            } else {
                System.out.println("found existing");
                table.put(splittedInput[i], table.get(splittedInput[i] + 1));
            }
        }
        
        boolean isEven = inputString.length() % 2 == 0;
        System.out.println("Is even: " + isEven);
        int oddCounter = 0;
        Set<Character> keys = table.keySet();
        System.out.println("Key length " + keys.size());
        for (Character key : keys) {
            System.out.println("key: " + key + " value: " + table.get(key));
            if (table.get(key) % 2 == 0) {
                ans = "YES";
                System.out.println("found even");
                continue;
            } else {
                System.out.println("found odd");
                if (isEven) {
                    ans = "NO";
                    break;
                } else {
                    oddCounter++;
                    if (oddCounter > 1) {
                        ans = "NO";
                        break;
                    }
                }
            }
        }
        // Assign ans a value of s or no, depending on whether or not inputString satisfies the required condition
        
        System.out.println(ans);
        myScan.close();
    }
}