Question

how to sorted the list from another class!!!

example i have a class

public meso

public meso(string id)

public hashmap<string, integer> neou{

this class print out

b

d

e

c

a

now create another class

public mesono

public mesono(hashmap<string, integer> nei)

//want to sorted meso class print list to this class!!

// print out

a

b

c

d

e

}

( -------Java------)

  

Answer 1

import java.util.*;
import java.util.Map.Entry;
public class meso {
        static String word;
        //Parameterized constructor
        public meso(String id) {
                word=id;
        }
        public static void main(String[] args) {
                // TODO Auto-generated method stub
                meso m = new meso("bdeca");
                //Calling neou function to print characters in the string and returns hashmap
                HashMap<Character, Integer> dict=neou(word);
                //Calling another class
                mesono m2 = new mesono(dict); 
                //Calling sortbykey function which is in mesono class
                m2.sortbykey();
        }
        private static HashMap<Character, Integer> neou(String word2) {
                // TODO Auto-generated method stub
                HashMap<Character, Integer> hash =new HashMap<Character, Integer>();
                System.out.println("Before sorting:");
                //Reading each character in the string
                for(int i=0;i<word2.length();i++) {
                        System.out.println(word2.charAt(i));
                        hash.put(word2.charAt(i), i);
                }
                return hash;
        }

}
class mesono{
        static HashMap<Character, Integer> map;
        public mesono(HashMap<Character, Integer> dict) {
                map=dict;
        }
        //Sorting values in the hashmap using treemap
        public static void sortbykey() 
    { 
        // TreeMap to store values of HashMap 
        TreeMap<Character, Integer> sorted = new TreeMap<>(); 
  
        // Copy all data from hashMap into TreeMap 
        sorted.putAll(map); 
        System.out.println("After sorting:");
        // Display the TreeMap which is naturally sorted 
        for (Entry<Character, Integer> entry : sorted.entrySet())  
            System.out.println(entry.getKey());         
    } 
}

Sample input and output:

Before sorting:
b
d
e
c
a
After sorting:
a
b
c
d
e
//Please leave comment if you have any doubts. THANK YOU.