reverse!

..  reverse!(v [, start=1 [, stop=length(v) ]]) -> v

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

Examples

The reverse!(v [, start=1 [, stop=length(v) ]]) function in Julia is used to reverse the elements of a mutable collection v in-place. It modifies the collection v itself and returns it.

Here are some examples of how to use the reverse! function:

Reverse an array:

julia> arr = [1, 2, 3, 4, 5];
julia> reverse!(arr)
5-element Array{Int64,1}:
5
4
3
2
1

This example reverses the elements of the array arr in-place.

Reverse a subset of an array:
```
julia> arr = [1, 2, 3, 4, 5];
julia> reverse!(arr, 2, 4)
5-element Array{Int64,1}:
1
4
3
2
5
```
Here, the function reverses the elements from index 2 to index 4 (inclusive) in the array arr.
Reverse a string:
```
julia> str = "Hello, Julia!";
julia> reverse!(str)
"!ailuJ ,olleH"
```
The reverse! function can also be used to reverse the characters in a string in-place.

It's important to note that the reverse! function modifies the original collection directly. If you want to create a new reversed collection without modifying the original one, you can use the reverse function instead.

Please let me know if you need any further assistance!

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reverse!

Examples

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