sortign string - why this difference?

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  • Sonnich
    #1

    sortign string - why this difference?

    Hi!

    I have 2 arrays which I sort ny the first one.

    for($i=0;$i<(co unt($item1)-1);$i++)
    {
    $k = $i;
    for($j=$i;$j<(c ount($item1)-1);$j++);
    {
    if (strcmp($item1[$k],$item1[$j])<0)
    $k = $j;
    }
    if($k<>$i)
    {
    $temp=$item1[$i]; $item1[$i]=$item1[$k];
    $item1[$k]=$temp;
    $temp=$item2[$i]; $item2[$i]=$item2[$k];
    $item2[$k]=$temp;
    }
    }

    Pretty simple - it works, I get the highest item first - I'd like it
    the other way.

    But
    if (strcmp($item1[$j],$item1[$k])<0) // k an j switched
    does not work, though
    if (strcmp($item1[$j],$item1[$k])>0) // < replaced by >
    does work, but it is descending

    why this?

    I can read my array backwards, it is ok, but why this????

    BR
    Sonnich

    Tags: None
    • Sonnich
      #2
      Re: sortign string - why this difference?


      Sonnich wrote:[color=blue]
      > Hi!
      >
      > I have 2 arrays which I sort ny the first one.
      >
      > for($i=0;$i<(co unt($item1)-1);$i++)
      > {
      > $k = $i;
      > for($j=$i;$j<(c ount($item1)-1);$j++);
      > {
      > if (strcmp($item1[$k],$item1[$j])<0)
      > $k = $j;
      > }
      > if($k<>$i)
      > {
      > $temp=$item1[$i]; $item1[$i]=$item1[$k];
      > $item1[$k]=$temp;
      > $temp=$item2[$i]; $item2[$i]=$item2[$k];
      > $item2[$k]=$temp;
      > }
      > }
      >
      > Pretty simple - it works, I get the highest item first - I'd like it
      > the other way.
      >
      > But
      > if (strcmp($item1[$j],$item1[$k])<0) // k an j switched
      > does not work, though
      > if (strcmp($item1[$j],$item1[$k])>0) // < replaced by >
      > does work, but it is descending
      >
      > why this?
      >
      > I can read my array backwards, it is ok, but why this????
      >
      > BR
      > Sonnich[/color]

      I should add the the strings I have are something like:

      AB123456
      BB345324
      BB235342
      XX3634543
      T44444 <- this is rare, but might happen
      TR000001

      Sonnich

        Comment

        • AlexVN
          #3
          Re: sortign string - why this difference?

          Sonnich,

          Most likelly your an error here:
          for($j=$i;$j<(c ount($item1)-1);$j++);
          This "for" is an empty "for" that just does nothing, because its body
          is empty--it is closed by the the last ";" in the line.

          --
          Alexander,
          http://www.alexatnet.com/

            Comment

            • Sonnich
              #4
              Re: sortign string - why this difference?


              AlexVN wrote:[color=blue]
              > Sonnich,
              >
              > Most likelly your an error here:
              > for($j=$i;$j<(c ount($item1)-1);$j++);
              > This "for" is an empty "for" that just does nothing, because its body
              > is empty--it is closed by the the last ";" in the line.[/color]

              stupid me.... thanks

              Sonnich

                Comment

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