编辑代码

import java.util.HashMap;
import java.util.Map;

import java.util.Scanner;

 class Test {
    public static void main(String[] args) {
        Map<String,Integer> map = new HashMap<>();
        Scanner in = new Scanner(System.in);
        int n;
        while( (n = in.nextInt()) != 0){
            for (int i = 0;i<n;i++){
                String str = in.next();
                if (map.containsKey(str)){
                    int value =  map.get(str)+1;
                    map.replace(str,value);

                }
                else {
                    map.put(str,1);
                }
            }
            int max = 0;
            String a = null;
            for(String element : map.keySet()){
                if (map.get(element) > max){
                    max = map.get(element);
                     a = element;
                }
            }
            System.out.println(a);
            map.clear();
        }

    }
}