Question

How to print only the unique values from array in Java

Answer 1

import java.util.Arrays;
 
public class MyClass {
    public static void main(String args[]) {
        Integer arr[] = {5, 2, 1, 3, 7, 1, 5, 9, 3, 3, 3, 2};
  
        Arrays.stream(arr).distinct().forEach((n) -> System.out.printf("%d ", n));
    }
}
  
 
  
  
/*
run:
  
5 2 1 3 7 9 
  
*/

 

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Answer 2

import java.util.Arrays; 
import java.util.Set; 
import java.util.TreeSet; 

public class MyClass {
    public static void main(String args[]) {
        Integer arr[] = {5, 2, 1, 3, 7, 1, 5, 9, 3, 3, 3, 2, 2};
  
        Set<Integer> uniqValues = new TreeSet<Integer>();
        uniqValues.addAll(Arrays.asList(arr));
         
        System.out.println(uniqValues);
    }
}
  
  
  
  
/*
run:
  
[1, 2, 3, 5, 7, 9]
  
*/

 

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