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Java Program to create an array with randomly shuffled numbers in a given range
For randomly shuffled numbers, let us create an integer list and add some numbers −
List < Integer > list = new ArrayList < Integer > (); list.add(10); list.add(50); list.add(100); list.add(150); list.add(200);
Now, shuffle the elements for random values −
Collections.shuffle(list);
Create an int array with the same number of elements in the above list −
intlen = list.size(); int[] res = newint[len];
Set the shuffled values in the new array −
for (inti = 0; i < len; i++) {
res[i] = list.get(i);
}Example
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class Demo {
public static void main(String args[]) {
List<Integer>list = new ArrayList<Integer>();
list.add(10);
list.add(50);
list.add(100);
list.add(150);
list.add(200);
list.add(350);
list.add(500);
list.add(800);
list.add(1000);
Collections.shuffle(list);
int len = list.size();
int[] res = new int[len];
for (int i = 0; i < len; i++) {
res[i] = list.get(i);
}
System.out.println("Randomly shuffled array elements = "+Arrays.toString(res));
}
}Output
Randomly shuffled array elements = [10, 200, 1000, 350, 100, 50, 500, 800, 150]
Updated on: 30-Jul-2019
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