How to shuffle the numbers in Apex Salesforce.

Thanks Shiva Chitta for providing this solution.
Requirement:We need to shuffle the numbers from 0 to 9 .Every time we run the page,different sequence of numbers to be displayed.
Solution:
Apex Class:
public class ShuffleNumbers {
    public Set<Integer> alreadyUsed {get;set;}
    public List<Integer> shuffledNumbersByCh {get;set;}
    public void shuffleNumbers() {
        //set the range of numbers from to N
        Integer lsitSize = 10;
        alreadyUsed= new Set<Integer>();
        shuffledNumbersByCh = new List<Integer>();
        while(shuffledNumbersByCh .size() < lsitSize){
            shuffledNumbersByCh .add(getRandom(lsitSize));
        }
        system.debug('Final shuffled Numbers'+shuffledNumbersByCh );
       
    }
    public Integer getRandom(Integer shuffledMaxNumber){
        Integer randomNum;
        do {
            randomNum = (math.random() * shuffledMaxNumber).intValue();
        } while (alreadyUsed.contains(randomNum));
        alreadyUsed.add(randomNum);
        return randomNum;
    }
}
Visualforce Page:
<apex:page controller="ShuffleNumbers" action="{!shuffleNumbers}">
The shuffled Numbers are :{!shuffledNumbersByCh}
</apex:page>
Note :When ever you re-run the page,difference sequence of numbers is given as output.
Output: