array de strings
Para ordenar una array de strings en Java, podemos usar la función Arrays.sort() .
Java
// A sample Java program to
// sort an array of strings
// in ascending and descending
// orders using Arrays.sort().
import java.util.Arrays;
import java.util.Collections;
public class SortExample {
public static void main(String[] args)
{
String arr[] = { "practice.geeksforgeeks.org",
"quiz.geeksforgeeks.org",
"code.geeksforgeeks.org" };
// Sorts arr[] in ascending order
Arrays.sort(arr);
System.out.printf("Modified arr[] : \n%s\n\n",
Arrays.toString(arr));
// Sorts arr[] in descending order
Arrays.sort(arr, Collections.reverseOrder());
System.out.printf("Modified arr[] : \n%s\n\n",
Arrays.toString(arr));
}
}
Producción:
Arr modificado[] :
Arr modificado[]:
[quiz.geeksforgeeks.org, Practice.geeksforgeeks.org, code.geeksforgeeks.org]
ArrayLista De Strings
Si tenemos un ArrayList para ordenar, podemos usar Collections.sort()
Java
// A sample Java program to sort
// an arrayList of strings
// in ascending and descending
// orders using Collections.sort().
import java.util.ArrayList;
import java.util.Collections;
public class SortExample {
public static void main(String[] args)
{
ArrayList<String> al = new ArrayList<String>();
al.add("practice.geeksforgeeks.org");
al.add("quiz.geeksforgeeks.org");
al.add("code.geeksforgeeks.org");
// Sorts ArrayList in ascending order
Collections.sort(al);
System.out.println(
"Modified ArrayList : \n" + al);
// Sorts arr[] in descending order
Collections.sort(al,
Collections.reverseOrder());
System.out.println(
"Modified ArrayList : \n" + al);
}
}
Producción:
ArrayList modificado:
ArrayList modificado:
[quiz.geeksforgeeks.org, Practice.geeksforgeeks.org, code.geeksforgeeks.org]