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How to shuffle a List in Java
First, create an Integer array −
Integer[] strArray = new Integer[] { 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 };Now, convert it into a List −
List<Integer>list = Arrays.asList(strArray);
Use Collections to shuffle as shown below −
Collections.shuffle(list);
Example
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class Demo {
public static void main(String args[]) {
Integer[] strArray = new Integer[] { 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 };
List<Integer>list = Arrays.asList(strArray);
System.out.println("List = "+list);
Collections.shuffle(list);
System.out.println("Shuffled List = "+list);
}
}Output
List = [10, 20, 30, 40, 50, 60, 70, 80, 90, 100] Shuffled List = [100, 90, 40, 70, 20, 10, 80, 30, 60, 50]
Updated on: 30-Jul-2019
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