ShuffleArray

function shufflearray(arr,n)
{
var ans='';
for(let i=0; i<n; i++)
{
ans+=arr[i]+" ";
}
console.log(ans);
}
let randomize=(arr ,n)=>
{
for (let i = n - 1; i > 0; i--)
{
let j = Math.floor(Math.random() * (i + 1));
[arr[i], arr[j]] = [arr[j], arr[i]];
}
}
let arr = [2,1,5,3,11,7];
let n = arr.length;
randomize (arr, n);
shufflearray(arr, n);