package ind.idehub.day1;

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

public class CountMax {

    public static void main(String[] args) {
        // TODO Auto-generated method stub
        String s = "hidjahgugahjjaiosdhgbh";
        Map <Character, Integer> map = new <Character, Integer> HashMap();
        int len = s.length();
        
        
        for(int i=0; i<s.length();i++) {
            Character k = s.charAt(i);
            map.put(k, (map.get(k) == null ? 1: map.get(k) + 1));
        }
        
        System.out.println(map);
        
    }
}

输出结果 : {a=3, b=1, s=1, d=2, u=1, g=3, h=5, i=2, j=3, o=1}
怎么提取出出现最多次数的字符?

怎么比较啊,map中只能用key提取value,比较出最大的value后,怎么输出key

赞,谢谢,看来容器的api文档还要再好好看看