It took me 41 lines haha. Great solution

That's even more impressive

how the hell did you guys came up with these solutions?

Bro

You even know how to use key in sorted function

Elegant solution!
Question: The details say to note that "it may happen that the input string have leading, trailing whitespaces and more than a unique whitespace between two consecutive numbers". This solution and many others don't seem to account for that i.e. if there are multiple whitespaces between numbers then there is inconsistent spacing in the output string.

Amazing

what level is the person who writes this?
my code was 20 lines.

Nice. I bow down =P

How-

it took me nearly as long as you, as long as you get it working in the end it's no biggie

bro aint no way, i was doing like 20 lines

cool use of lamda man, n1

Please use spoiler flag.