Sort string into alphabetical order

Question

I'm working through the challenges on coderbyte.com to brush up on programming skills. The challenge is to sort a string $str into alphabetical order. The output must be a string, I'm 99% my logic and code is correct but its throwing errors, Can anyone spot if I have done anything wrong before I contact coderbyte.

eg if $str = cat hat; $imp should return 'aacht' my code is:

function AlphabetSoup($str) {  


 $arr = str_split($str, 1);
 $sorted = sort($arr);
 $imp = implode('', $sorted);


  return $imp;  

}

also add a string and expected result? – Rakesh Sharma Oct 29 '14 at 04:22 — Rakesh Sharma, Oct 29 '14 at 04:22

Rakesh Sharma · Accepted Answer · 2014-10-29T04:30:18.497

3

sort() :- Returns TRUE on success or FALSE on failure.
You need to quoting over string like $str = 'cat hat'; and you will get result Try

$str = 'cat hat';
$sparts = str_split($str);
sort($sparts);
$imp = implode('', $sparts); //aachtt 
return $imp;  // will be a string

edited Oct 29 '14 at 04:30

answered Oct 29 '14 at 04:24

Rakesh Sharma

13,680
5
37
44

1

I did, the add some code at the bottom for testing to see if you pass.. they trow a series of test cases in and the error code is showing that their line of code is not working now... so its them... not your code. – Shout It Web Solutions Oct 29 '14 at 04:37
I'm solving all their question for interview i'm having and all sort function are not working even usort – Bakly Dec 19 '14 at 20:54

Mark Miller · Answer 2 · 2014-10-29T04:32:54.553

1

sort() returns true or false, not an array. Try this:

...
$arr = str_split($str, 1);
sort($arr);
$imp = implode('', $arr);
...

See demo

edited Oct 29 '14 at 04:32

answered Oct 29 '14 at 04:23

Mark Miller

7,442
2
16
22

so there is no function like sort() that will return either a string or an array? – Shout It Web Solutions Oct 29 '14 at 04:25
@ShoutItWebSolutions `sort()` sorts the given array. In your case, why would you need to create another array, when you can just use `sort` to sort the one you have? If you wanted, you could create a copy of the array and then sort that... `$arr2 = $arr; sort($arr2); ...` but why would you need to...? – Mark Miller Oct 29 '14 at 04:28
1

@ShoutItWebSolutions try this solution most likely this will work just fine, `sort()` works on arrays, `str_split` just turned your input string into an array so that `sort()` could manage to sort it alphabetically. the `implode()` just glued up the sorted array back into a string again. – Kevin Oct 29 '14 at 04:29
that was my logic... except I misunderstood the output of sort() i though it returned an array. – Shout It Web Solutions Oct 29 '14 at 04:35

Sougata Bose · Answer 3 · 2014-10-29T04:37:25.447

0

sort() returns TRUE on success or FALSE on failure. so $sorted would contain boolean value not an array.It will sort the array. try with -

$arr = str_split($str, 1);
sort($arr);
$imp = implode('', $arr);

edited Oct 29 '14 at 04:37

answered Oct 29 '14 at 04:26

Sougata Bose

31,517
8
49
87

Sort string into alphabetical order

3 Answers3