Still O(n) time complexity as args.Min() has to iterate through the whole string in worst case similar to a for loop

Are u serious? I`m gonna practice more...

Another opportunity to practice with LINQ (◕‿◕)

okay don't need to complain about the solution actualy obviously that's a basic question so it doesn't matter how you solve it

so ez

Very true. Luckily we have a multitude of tools in the toolbox with which to solve real-world problems. If we had to do it all in assembler life would be tedious indeed. In the same way that I don't use a hammer-drill to put a picture nail in a wall, I don't use assembler to build web APIs.

If all the people use C# instead of assembler, then programming will cease to be programming.

I disagree. The art of programming is to deliver the right solution in a clear and concise manner. Sure, we could written this in any number of ways, a for loop, a recursive algorithm, but it is more important to make your code readable than it is to make it work.
If using system libraries delivers a clearly understandable codebase that executes within required parameters, then use them. If they don't, dont.

beautiful, of course, but if all the time using system libraries, then programming will cease to be programming.

Simple. Elegant. Obvious.