Java Math Exercises: Count the absolute distinct value in an array
Java Math Exercises: Exercise-5 with Solution
Write a Java program to count the absolute distinct value in an array.
Sample Solution:
Java Code:
import java.util.*;
import java.math.*;
public class Example5 {
public static void main(String[] args) {
{
int[] numbers = new int[] {
-1, -1, 0, 2, 2, 3, 0, 1, 5, 9
};
int count = 0;
HashSet < Integer > set = new HashSet < Integer > ();
for (int i = 0; i < numbers.length; i++) {
int n = Math.abs(numbers[i]);
if (!set.contains(n)) {
set.add(n);
count++;
}
}
System.out.println(count);
}
}
}
Sample Output:
6
Flowchart:
Java Code Editor:
Contribute your code and comments through Disqus.
Previous: Write a Java program to round a float number to specified decimals.
Next: Write a Java program to reverse an integer number.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
Java: Tips of the Day
How to sort an ArrayList?
Collections.sort(testList); Collections.reverse(testList);
That will do what you want. Remember to import Collections though!
Ref: https://bit.ly/32urdSe
- New Content published on w3resource:
- HTML-CSS Practical: Exercises, Practice, Solution
- Java Regular Expression: Exercises, Practice, Solution
- Scala Programming Exercises, Practice, Solution
- Python Itertools exercises
- Python Numpy exercises
- Python GeoPy Package exercises
- Python Pandas exercises
- Python nltk exercises
- Python BeautifulSoup exercises
- Form Template
- Composer - PHP Package Manager
- PHPUnit - PHP Testing
- Laravel - PHP Framework
- Angular - JavaScript Framework
- Vue - JavaScript Framework
- Jest - JavaScript Testing Framework