How exactly do you expect Python to parse "abc" as a number?

Because you cannot convert a letter to a number.

How that's works?

This solution is actually quite close to the timeout limit and will sometimes not even make it. Not that mine is any better really!

best idea for solution!

Description should be made language-agnostic

nice :)

Here's what I gather: l has 3 occurrences; the rest of the characters, including the space, each have 2 occurrences, so they stay in their positions (tie).

Please explain the second example, as it's not clear (for me, at least)

'Hello He worldwrd' --> 'lllHeo He wordwrd' (not 'lllHHeeoo  wwrrdd')

• Why are all ls together in the first word, and not in the 1st and 3rd?
• Why does the o stay in the 3rd word of the output, if the l in the same word moved to the 1st?
• If they should all appear at the first appearance, why is there a separate He in the output?
• Why the multiple ws and ds are not grouped in the 3rd word of the output?

to be clear, this is not the best solution as it uses O(n^2 log n) time; Blind4Basics solution is better.

Approved