shuffle!

..  shuffle!([rng,] v)

In-place version of :func:`shuffle`.

Examples

The shuffle! function in Julia is an in-place version of the shuffle function. It shuffles the elements of an array or collection randomly, modifying it in-place. Here are some examples of how to use the shuffle! function:

Shuffle an array of integers:
```
julia> arr = [1, 2, 3, 4, 5];
julia> shuffle!(arr)
5-element Array{Int64,1}:
5
2
4
1
3
```
This example shuffles the elements of the array arr randomly.
Shuffle a string:
```
julia> str = "hello";
julia> shuffle!(str)
"olhle"
```
It shuffles the characters of the string str randomly.

Common mistake example:

julia> matrix = [1 2 3; 4 5 6; 7 8 9];
julia> shuffle!(matrix)
ERROR: MethodError: no method matching shuffle!(::Array{Int64,2})

In this example, the shuffle! function is called on a 2-dimensional array (matrix), which is not supported. The shuffle! function works only with one-dimensional arrays or collections. Make sure to pass a valid one-dimensional array to the shuffle! function.

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shuffle!

Examples

See Also

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