Sorting an Array
Regan Heath
regan at netmail.co.nz
Tue Jul 10 10:54:03 PDT 2007
I believe the array.sort routine uses Quicksort. So, the code below
already implements it.
Regan
okibi wrote:
> This does seem like the best way, but I'm not sure how I would go about implement Quicksort into that code. Could you please give me some pointers?
>
> Thanks!
>
> downs Wrote:
>
>> okibi wrote:
>>> Is there an easy way to sort an array with elements such as "12 - Some text" or "241 - Other Text"?
>>>
>>> I want to sort in order of the numbers. Is this possible?
>>>
>>> Thanks!
>> // Sort array via comparison operator.
>> // 'bigger' returns if 'value' is bigger than 'than'.
>> void sort(T)(ref T[] array, bool function(T value, T than) bigger) {
>> // comparing sorting algorithm goes here. See wikipedia for examples.
>> // Quicksort should do nicely and is easy to implement.
>> }
>>
>> long getNumericPart(char[] inp) {
>> if (!input.length) return long.max+1; // no number is very small.
>> size_t numlen=0;
>> while (numlen<inp.length)&&(inp[numlen]>='0')&&(inp[numlen]<='9'))
>> ++numlen;
>> return inp[0..numlen];
>> }
>>
>> void main() {
>> char[][] array=getArray(); // array is read
>> array.sort(function(char[] a, char[] b) {
>> return getNumericPart(a)>getNumericPart(b);
>> });
>> }
>>
>> Didn't try, obviously, but it should work.
>> Have fun! :D
>> --downs
>
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