kaveman50

Does anyone know how to do (or at least help me get started on) a binary search? I have to create a list of 25 names in alphebetical order. Create a binary search program that searches for an input name. Tell the user whether or not the name was found. The names i'll use will be. $arr=array('Allen', 'Brad', 'Chris', 'Drake', 'Eugene',' Frank', 'Greg', 'Hank', 'Ingrid', 'Jim', 'Kraig', 'Lee', 'Molly', 'Nathan', 'Otis', 'Peter', 'Quame', 'Rolland', 'Sean', 'Tiffany', 'Utopia', 'Venus', 'Walley', 'Xephinorgi', 'Yullanda', 'Zeus');

I'm probably really off. It's just coming up blank. I guess I should just start over...

?? This is what I have so far. I'm not sure where to go from here though. <? $grades=array(); $file=fopen("grades.txt","r") or exit("Unable to open file!"); $file=fopen("HIGHER.txt","r") or exit("Unable to open file!"); $file=fopen("LOWER.txt","r") or exit("Unable to open file!"); while(!feof($file)) { $f = fgets($file); array_push($grades, $f); } $arr[$i] = explode('", ', $grades[$i]); fclose($file); ?>

How could I have a main text file, for instance PRIMARY.txt that has scores of certain tests, but then make 2 more txt files using php that'll make it so that it'll show scores lower than 50 in a file called lower.txt and the scores greater than 50 in a file called higher.txt? Anyone know?

Thanks! The splice worked. I'm not sure why the shift wasn't working. Anyways, no more questions on this program again I promise.

Sorry I meant dropping the 2 lowest scores.

It just displays the average without it rounded off, though.

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Oh yeah how would I drop the 2 lowest scores?

Oh I didn't see the array POST you added in the second time. My bad. Thanks for the help.

It still comes up as 0

I'm sorry but I still don't really get what you mine by putting a blank [] after the num. I tried it once and it gave me even more errors. The most recent code I have doesn't say any errors when I click submit, but it returns zero. <form method='post' action=''> Enter Student's Name: <br/> <input type="text" name="num1" value = " " /> <br/> <br/> Enter Seven Tests Scores Here: <br/><input type="text" name="num1" value = "<?=$_POST['num']?>" /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?>" /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?>" /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?>" /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?>" /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?>" /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?>" /> <br/><input type='Submit' name='Submit' value="Submit" /> </form> <? $arr=array($_POST['num']); function getAverage($arr) { asort($arr); array_shift($arr); array_shift($arr); return array_sum($arr) / count($arr); } if(isset($_POST['Submit'])) { echo array_sum($arr) / count($arr); } ?>

nevermind

What spaces are you talking about?

For some reason it still gives me all those warnings. The only difference now is that it appears after you press submit. Do I also need to do the <?=$=......?> for the value of my submit button?

Oh wait it's saying Warning: asort() expects parameter 1 to be array, null given in /Applications/XAMPP/xamppfiles/htdocs/webalizer/av.php on line 25 Warning: array_shift() expects parameter 1 to be array, null given in /Applications/XAMPP/xamppfiles/htdocs/webalizer/av.php on line 25 Warning: array_shift() expects parameter 1 to be array, null given in /Applications/XAMPP/xamppfiles/htdocs/webalizer/av.php on line 25 Warning: array_sum() expects parameter 1 to be array, null given in /Applications/XAMPP/xamppfiles/htdocs/webalizer/av.php on line 26 Warning: Division by zero in /Applications/XAMPP/xamppfiles/htdocs/webalizer/av.php on line 26 <form method='post' action=''> Enter Student's Name: <br/> <input type="text" name="num1" value = " " /> <br/> <br/> Enter Seven Tests Scores Here: <br/><input type="text" name="num1" value = "<?=$_POST['num']?> " /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?> " /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?> " /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?> " /> <br/><input type="text" name="num1" value = " <?=$_POST['num']?>" /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?> " /> <br/><input type="text" name="num1" value = "<?=$_POST['num']?> " /> <br/><input type='Submit' name='Submit' value="Submit" /> </form> <? $arr=array($_POST['num']); function getAverage($arr) { asort($arr); array_shift($arr); array_shift($arr); return array_sum($arr) / count($arr); } echo getAverage($_POST['num']); ?>[/Code]

Thanks guys. =)

and then would i just do print_r($counter) and leave my posts the way they are after i add in your code?

does anyone know how to make it so that you can make user input 7 grades and ouput average and drop the 2 lowest scores? This is all i know how to do <form method='post' action=''> Enter Student's Name: <br/> <input type="text" name="num1" value = " " /> <br/> <br/> Enter Seven Tests Scores Here: <br/><input type="text" name="num1" value = "<?=$_POST['Steve']?> " /> <br/><input type="text" name="num1" value = "<?=$_POST['Steve']?> " /> <br/><input type="text" name="num1" value = "<?=$_POST['Steve']?> " /> <br/><input type="text" name="num1" value = "<?=$_POST['Steve']?> " /> <br/><input type="text" name="num1" value = " <?=$_POST['Steve']?>" /> <br/><input type="text" name="num1" value = "<?=$_POST['Steve']?> " /> <br/><input type="text" name="num1" value = " " /> <br/><input type='Submit' name='Submit' value="Submit" /> </form> <? $steve1=$_POST['Steve']; $a=array($_POST['Steve']); print_r (array_sum($a)) ; ?>

Nah it's not homework but I figured it out. Thanks guys

It can't have names already in the code because the user has to enter the names.

Hello does anyone know how to solve this? Accept 5 words to be input in alphabetical order and store them in an array (If input out of alphabetical order, write your script to fix it). Then accept a 6th word as input and store it in the array in its correct alphabetical position.

Mikesta or anyone else know what to do?

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