JS => 6kyu

Fixed.

Fixed.

Fixed.

By the way, please post as a question if you're unsure about your code. Posting as an issue is reserved for when there's a problem with the kata.

are you mutating input?

in Python: solution is visible in test feedback

There seems to be a problem with the random tests in Python 3.6, looking at the other issues, I can confirm this is not due to mutation of the input, this is a new dict being returned.

Example:

 Testing for {1: 'Lazio', 2: 'Milan', 3: 'Roma', 4: 'Juventus', 5: 'Inter', 6: 'Torino', 7: 'Liverpool', 8: 'Arsenal', 9: 'Fiorentina'}
 Log
Input:
1: Lazio
2: Milan
3: Roma
4: Juventus
5: Inter
6: Torino
7: Liverpool
8: Arsenal
9: Fiorentina
-=-
Output:
1: Lazio
2: Arsenal
3: Fiorentina
4: Inter
5: Juventus
6: Liverpool
7: Milan
8: Roma
9: Torino
 STDERR
Traceback (most recent call last):
  File "main.py", line 16, in <module>
    Test.assert_equals(premier_league_standings(teams),sol(teams),"It should work for random inputs too")
  File "main.py", line 10, in <lambda>
    sol=lambda t: {i+1: k for i,k in enumerate([t[1]]+sorted(k for i,k in t.items() if i!=1))}
KeyError: 1

As you can see in the output - the key 1 is present.

The user can modify the input in Python (at least).

Solving for JS, the random tests are expecting Inter to come before Coventry alphabetically. Has anyone else experienced this? It switches places 3 and 5 with Florentina in the middle.

People, your guys included, should be taught when to use an Object and when to use an Array. Because there is a difference. Accessing an Array is an O(1) operation; accessing an Object is an O(log size) operation.

So this might not be the ideal example to teach about Objects, because author just reinvented an Array as an Object. There would be more suitable examples.

I liked the concept of this kata but it seems fairly easy to kind of cheat on it. I feel the point of it was to train using objects but a lot of ppl are just turning the object into an array, using the sort() function, then making it into an object again. So I think that might be a flaw.

Approved - thank you for the translation! :)

Added - thank you :)