Write a simple logic to shuffle a given array.

Consider this array -

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const nums = [1, 2, 3, 4, 5, 6];

You can shuffle this array by using the following code -

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const nums = [1, 2, 3, 4, 5, 6];

nums.sort(() => Math.random() - Math.random());
console.log(nums);
/*
 [ 1, 4, 5, 2, 6, 3 ]
 [ 6, 1, 4, 2, 5, 3 ]
 ...
*/

Each run of the routine will give you a different array, thanks to Math.random() expression. Subtracting one random number from the other can give you a positive or negative result - so the sort can be totally different and random.

However, the arrays may not be unique. It is highly likely that you encounter duplicates when shifting through a larger number of possible permutations of the array.