I was probably not explicit enough. Let's take an example:
1 3 2
If we first reverse it, we get
2 3 1
and then we sort it to get
1 2 3
On the other hand, if we sort it first, we get
1 2 3
and we can then reverse it to
3 2 1
Functions are not called left to right, but from the innermost to the outermost, i.e. rather right to left.
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