php to set order of preference of an Array Sequence using string length - 


$records = array(  '123pp' => 3.63,  '123ddd' => 9.63,  '123d' => 6.63,  '123pppp' => 9.63,  '123dd' => 9.63,  '123p' => 2.63,  '123ppp' => 1.53 );

after looping through records, have 1 value key should 123d because order of preference is: 123d, 123p, 123dd, 123pp, 123ddd, 123ppp, 123pppp...

for e.g.:

  • if 123d not found in array, 123p answer.
  • if 123p not found in array, 123dd answer.

and have found solution :

foreach ($records $key => $value) { if (empty($this->minlength)) { $this->invoicetax = $value;           $this->minlength = strlen($key);         }         elseif (strpos($key, 'p') !== false && (strlen($key) < $this->minlength)) {           $this->invoicetax = $value;           $this->minlength = strlen($key);         }         elseif (strpos($key, 'd') !== false && (strlen($key) <= $this->minlength)) {           $this->invoicetax = $value;           $this->minlength = strlen($key);         }

but want know if code can optimised not storing string length of every key.

this function tidied solved recursion. means if 123d in array code highly optimised , run once, twice 123p, 3 times 123dd, etc.

function getmostpref($records, $key = "123", $next = "d", $depth = 0) {    if($depth == count($records))    {        // hit end of array nothing found        return false;    }     if(strpos($next, 'd') !== false)    {      // looking @ 'd...' key.      // next key same length key ps.      $nextkey = str_repeat('p', strlen($next));    }    else if(strpos($next, 'p') !== false)    {      // looking @ 'p...' key.      // next key has 1 char , ds.      $nextkey = str_repeat('d', strlen($next)+1);    }    else    {        // key not valid        return false;    }     if(array_key_exists($key.$next, $records))    {       // found key in array return it.       return $records[$key.$next];    }    else    {       // recursive call next key , increased depth.       return getmostpref($records, $key, $nextkey, $depth + 1);    } }   // testing $records = array(  '123pp' => 3.63,  '123ddd' => 9.63,  '123d' => 6.63,  '123pppp' => 9.63,  '123dd' => 9.63,  '123p' => 2.63,  '123ppp' => 1.53 );  // finds 123d , returns 6.63 echo getmostpref($records);

Comments

Post a Comment

Popular posts from this blog

jquery - How can I dynamically add a browser tab? -

since using iframes house external pages are, accounts "not preferred method" , disallowed sites (flickr, one), want dynamically generate browser tabs. e.g., when user submits form, want dynamically generate tab on browser in response submitted. e.g., might want add new tab url like: http://www.bigsurgarrapata.com/contact how in jquery? you want form target attribute action attribute. http://www.w3schools.com/tags/att_form_target.asp browsers have ultimate control on result of target attribute open new tab value of _blank. <form action="contact_submit.php" target="_blank" method="post">
Read more

keyboard - C++ GetAsyncKeyState alternative -

i using windows.h library's getasynckeystate function define key pushed on keyboard . here program returns int value of pushed key example. #include <iostream> #include <windows.h> using namespace std; int main (){ char i; for(i=8;i<190;i++){ if(getasynckeystate(i)== -32767){ cout<<int (i)<<endl; } } return 0; } but trying make opengl simple game , function appeared slow . there function not need cycle 180 times , if statement . thanks you're trying make opengl game, you're going use glfw. if that's case can away using glfwgetkey() such: if (glfwgetkey(glfw_key_up) == glfw_press) {...} if (glfwgetkey(glfw_key_down) == glfw_press) {...} that method nicely explained in tutorial 6 opengl-tutorial.org . should start first tutorial of beginners tutorials , later intermediate tutorials . if you're going make win32 window can listen wm_keydown or wm_keyup messages , virtua...
Read more

android - java.net.UnknownHostException(Unable to resolve host “URL”: No address associated with hostname) -

i developing app testing asp.net webservice in android.for simple webservice adding 2 numbers used.where numbers passed parameters.the result in dialogue.the webserver works in local. when application runs following result exception.i provided internet permission in manifest. java.net.unknownhostexception(unable resolve host “ http://url.com/ ”: no address associated hostname) my code given below main activity public static string rslt=""; /** called when activity first created. */ @override public void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); button b1=(button)findviewbyid(r.id.button1); final alertdialog ad=new alertdialog.builder(this).create(); b1.setonclicklistener(new onclicklistener() { @override public void onclick(view arg0) { // todo auto-generated method stub try { ...
Read more