TreeSet in java
// java treeset example
import java.util.Iterator;
import java.util.TreeSet;
public class TreeSetExamples
{
public static void main(String[] args)
{
TreeSet<String> ts = new TreeSet<String>();
ts.add("red");
ts.add("blue");
ts.add("green");
ts.add("red");
Iterator<String> iterate = ts.iterator();
while(iterate.hasNext())
{
System.out.println(iterate.next());
}
}
}java treeset
import java.util.*;
// Declare the variable using the interface of the object for flexibility.
// Non-primative data types only.
Set<String> movies = new TreeSet<String>();
movies.add(E);
// TreeSet will be sorted by element.
// Work with any comparable object.
movies.add("The Shining");
movies.add("Dawn of the Dead");
movies.add("Zombieland");TreeSet
// par défaut
TreeSet ensemble = new TreeSet();
// comparateur
Comparator comparateur = new Comparateur();
TreeSet ensemble = new TreeSet(comparateur);
// classe Comparateur implémentant l'interface Comparator
public class Comparateur implements Comparator {
public int compare(Object obj1, Object obj2){
return ((Comparable)obj2).compareTo(obj1);
}
public boolean equals(Object obj){
return this.equals(obj);
}
}treeset in java
- TreeSet sorts the order and don't accept nulltreeset
TreeSet: Can contain only unique values and it is sorted in ascending order
TreeMap: Can contain only unique keys and keys are sorted in ascending order.Copyright © 2021 Codeinu
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