개발이 하고 싶어요

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;

public class JomoPipi {
    public static String numericals(String s) {
        Map<String, AtomicInteger> map = new HashMap<>();
        StringBuilder result = new StringBuilder();

        for (String element :s.split("")) {
            int temp;
            if(map.containsKey(element)){
                temp=map.get(element).incrementAndGet();
            }else{
               temp = 1;
               map.put(element, new AtomicInteger(1));
            }

            result.append(temp);
        }


        return result.toString();
    }
}