题解 | 统计一句话中重复单词的个数

import java.util.*;

public class Main {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        String line = scanner.nextLine();
        Map<Character, Integer> map = new LinkedHashMap<Character, Integer>();

        //write your code here......
        StringBuilder s =new StringBuilder();
        for(int i=0;i<line.length();i++){
            if(Character.isLetter(line.charAt(i)))
            {
                if(map.containsKey(line.charAt(i)))
            {
                map.put(line.charAt(i),map.get(line.charAt(i))+1);
            }
            else{
                map.put(line.charAt(i),1);
            }
            }     
        }

        

        Set<Map.Entry<Character, Integer>> entrys = map.entrySet();
        for (Map.Entry<Character, Integer> entry : entrys) {
            System.out.println(entry.getKey() + ":" + entry.getValue());
        }
    }
}