public static List<Integer> getMinimumDifference(List<String> a, List<String> b) {
        List<Integer> result=new ArrayList<>();
        for(int i=0;i<a.size();i++)
        {

            String varA=a.get(i);
            String varB=b.get(i);

            Map<Character, Integer> stringAChars=new HashMap<>();
            Map<Character, Integer> stringBChars=new HashMap<>();
            for(int x=0;x<varA.length();x++)
            {
                char ch=varA.charAt(x);
                if(stringAChars.containsKey(varA.charAt(x)))
                {
                    stringAChars.put(ch,stringAChars.get(ch)+1);
                }else stringAChars.put(ch,1);

                ch=varB.charAt(x);

                if(stringBChars.containsKey(varB.charAt(x)))
                {
                    stringBChars.put(ch,stringBChars.get(ch)+1);
                }else stringBChars.put(ch,1);
            }
            int count=0;
            for(Map.Entry<Character, Integer> entry:stringAChars.entrySet())
            {
                if(!stringBChars.containsKey(entry.getKey()))
                {
                    count+=stringAChars.get(entry.getKey());
                }
            }
            for(Map.Entry<Character, Integer> entry:stringBChars.entrySet())
            {
                if(!stringAChars.containsKey(entry.getKey()))
                {
                    count+=stringBChars.get(entry.getKey());
                }
            }
            result.add(count);


        }
        return result;

    }