How can i sort a string with numbers

Question

can anyone help me with this, please?

I have an input string

Console.WriteLine("Enter some numbers");
string numbers = Console.ReadLine();

And let's say the input will be "3145". How can I ascending sort them (with loops if possible) and the output be "1345"?

I'm a very beginner...

does [this](https://stackoverflow.com/questions/6441583/is-there-a-simple-way-that-i-can-sort-characters-in-a-string-in-alphabetical-ord) answer your question? — styx, Feb 10 '20 at 09:27
If you need to use for loop, do the following: `numbers.ToCharArray()`, then you have an array of 'chars'. Then check this out: https://stackoverflow.com/questions/239103/convert-char-to-int-in-c-sharp — G.Dimov, Feb 10 '20 at 09:31
@styx I actually need to do this with loops, somehow...but thank you tho :) — M16, Feb 10 '20 at 09:32
" (with loops if possible)" welcome to StackOverflow. If you present a general problem, then it is likely that we find a general duplicate that answers this general problem. If you post your personal attempt to solve this problem with a loop and tell us what your difficulties are with the loop, then we will try to address your personal issue and answer your personal problem instead of closing this general question with a duplicate. Think about it. Please post your personal attempt to solve it using loops — Mong Zhu, Feb 10 '20 at 09:33
I voted to reopen, I think the given answer doesn't answer to his question. — Marco Salerno, Feb 10 '20 at 09:34
@MarcoSalerno "I think the given answer doesn't answer to his question" but it does. The expected result matches the one that the accepted answer in the duplicate will provide. OP has to edit the post, add the loop solving attempt, and make the problem description more individual by this — Mong Zhu, Feb 10 '20 at 09:37

Marco Salerno · Answer 1 · 2020-02-10T09:51:57.880

0

This is a possible solution:

Console.WriteLine("Enter some numbers");
string numbers = Console.ReadLine();
string result = string.Concat(numbers.Select(x => int.Parse(x.ToString())).OrderBy(x => x));

edited Feb 10 '20 at 09:51

answered Feb 10 '20 at 09:30

Marco Salerno

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Note: You can use `string.Concat(...)` instead of `string.Join(null, ...)` – canton7 Feb 10 '20 at 09:40
@canton7 I may be wrong, but I found many benchmarks about better performance with string.Join – Marco Salerno Feb 10 '20 at 09:41
That would surprise me: their implementations look pretty much the same (grab a `StringBuilder` from the cache, add things to it). I'll do some benchmarking – canton7 Feb 10 '20 at 09:43
`string.Join` comes in at ~120% the cost of `string.Concat` on both .NET Framework and Core. Not that such a difference to a relatively cheap method means much, anyway – canton7 Feb 10 '20 at 09:48
Oh, I guess it's cause of separator handling, well idk maybe people concerning about better performance for string.Join were playing with billions strings..? – Marco Salerno Feb 10 '20 at 09:51
Yeah, not sure. I don't think it matters much – canton7 Feb 10 '20 at 09:52
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I edited with the concat version anyway – Marco Salerno Feb 10 '20 at 09:52

How can i sort a string with numbers

1 Answers1