Java Array Exercises: Shuffle a given array of integers
Java Array: Exercise-60 with Solution
Write a Java program to shuffle a given array of integers.
Example:
Input :
nums = { 1, 2, 3, 4, 5, 6 }
Output:
Shuffle Array: [4, 2, 6, 5, 1, 3]
Sample Solution:
Java Code:
import java.util.Arrays;
import java.util.Random;
class solution
{
public static void shuffle(int nums[])
{
for (int i = nums.length - 1; i >= 1; i--)
{
Random rand = new Random();
int j = rand.nextInt(i + 1);
swap_elements(nums, i, j);
}
}
private static void swap_elements(int[] nums, int i, int j) {
int temp = nums[i];
nums[i] = nums[j];
nums[j] = temp;
}
public static void main (String[] args)
{
int[] nums = { 1, 2, 3, 4, 5, 6 };
System.out.println("Original Array: "+Arrays.toString(nums));
shuffle(nums);
System.out.println("Shuffle Array: "+Arrays.toString(nums));
}
}
Sample Output:
Original Array: [1, 2, 3, 4, 5, 6] Shuffle Array: [4, 2, 6, 5, 1, 3]
Flowchart:

Java Code Editor:
Improve this sample solution and post your code through Disqus
Previous: Write a Java program to find maximum product of two integers in a given array of integers.
Next: Write a Java program to rearrange a given array of unique elements such that every second element of the array is greater than its left and right elements.
What is the difficulty level of this exercise?
Test your Programming skills with w3resource's quiz.
Java: Tips of the Day
countOccurrences
Counts the occurrences of a value in an array.
Use Arrays.stream().filter().count() to count total number of values that equals the specified value.
public static long countOccurrences(int[] numbers, int value) { return Arrays.stream(numbers) .filter(number -> number == value) .count(); }
Ref: https://bit.ly/3kCAgLb
- Exercises: Weekly Top 12 Most Popular Topics
- Pandas DataFrame: Exercises, Practice, Solution
- Conversion Tools
- JavaScript: HTML Form Validation
- SQL Exercises, Practice, Solution - SUBQUERIES
- C Programming Exercises, Practice, Solution : For Loop
- Python Exercises, Practice, Solution
- Python Data Type: List - Exercises, Practice, Solution
- C++ Basic: Exercises, Practice, Solution
- SQL Exercises, Practice, Solution - exercises on Employee Database
- SQL Exercises, Practice, Solution - exercises on Movie Database
- SQL Exercises, Practice, Solution - exercises on Soccer Database
- C Programming Exercises, Practice, Solution : Recursion