How it can be voted as "best practice" if this approach is O(n * lg n)? it can be solved with O(n)

How it can be marked as "best practice" if this solution at least makes sort twice??

Nice solution

This is exactly how I first wanted to solve it! But if a guy had 3 names, it would be first and middle name letters, so I abandoned it and made a huge mess instead...

Simplified solution, but the code traverse four times the string.

i can't understand why you generated a range of numbers starts with 0 and ends with the Length minus 1 ?

Duplicate suggestion

Used the same solution:

Basically you just have a nested if clause, after a condition comes another condition, after the false of the inner If-Clause u contiue with the false of the first If-Clause

Ahhh I knew there was a cooler Linq'y way to solve this. Taking notes

I mean he could have just constructed a new array with the length of 100 and added 1 to each element to get up to 100 and then used the reduce method, but as you can probaly already tell that's way more work than just hard-coding the 5050. I did something similar in my code

why is this best practice if the sum 5050 is hard coded ? isn't a more general solution wherein the sum for the first 100 positive integers 0 included is calculated first the way to do it ?

Very concise, however there are at least 4 heap allocations here from creating new strings.
This solution should not be listed best practice.

Smart, i like it

i completely agree too, just recently starting to do C#, about a few months now, for college, but i've done python for years and i just feel like it's just a gimick. It's just used to show off and not for practicality. Glad some people agree with me!!!

Doesn't help for people trying to learn too, usually if i see "using Linq;" i just ignore it cause it's someone trying to do a 1 liner

Cool, clever use of recursion, but I would object putting this into production.