User input first name, last name, and age into Java queue and then sort by last name
Answered Essay: User input first name, last name, and age into Java queue and then sort by last name
Expert Answer
import java.io.*;
import java.util.*;
class sol {
public static class Person{
private String first_name;
private String last_name;
private String age;
public Person(String first_name, String last_name, String age) {
this.first_name = first_name;
this.last_name = last_name;
this.age = age;
}
public String getName() {
return last_name;
}
}
public static void main (String[] args) {
List<Person> persons = new ArrayList<Person>();
Scanner s = new Scanner(System.in);
//System.out.println(“How many records are there?”);
//int n = s.nextInt();
int n=3;
for(int i=0;i<n;i++)
{
String s1 = s.nextLine();
String s2 = s.nextLine();
String s3 = s.nextLine();
persons.add(new Person(s1,s2,s3));
}
Collections.sort(persons, new Comparator<Person>() {
@Override
public int compare(Person o1, Person o2) {
return o1.getName().compareTo(o2.getName());
}
});
for(Person person : persons) {
System.out.println(person.getName());
}
}
}
For the testing purpose, I kept the number of records as three. You can change it by uncommenting the two lines in the code.
Following are the inputs on which I tested the code:
Input:
sam
naru
21
pablo
hello
14
new
person
7
Output:
hello naru person
