Write a sort algorithm that can be a bubble sort or a quick sort, assuming that the object being sorted is a dimension array. (Hint: You cannot use the system already has functions, please also carefully recall the basic knowledge previously learned)

bubble sort (array sort)

functionBubble_sort ($array){    $count=Count($array); if($count<= 0)return false;  for($i= 0;$i<$count;$i++){         for($j=$count-1;$j>$i;$j--){            if($array[$j] <$array[$j-1]){                $tmp=$array[$j]; $array[$j] =$array[$j-1]; $array[$j-1] =$tmp; }        }    }    return $array;}

Quick Sort (array sort)

functionQuicksort$array) {    if(Count($array) <= 1)return $array; $key=$array[0]; $left _arr=Array(); $right _arr=Array();  for($i= 1;$i<Count($array);$i++){        if($array[$i] <=$key)            $left _arr[] =$array[$i]; Else            $right _arr[] =$array[$i]; }    $left _arr= Quicksort ($left _arr); $right _arr= Quicksort ($right _arr); return Array_merge($left _arr,Array($key),$right _arr);}

. Write a function that iterates through all subdirectories and sub-files in the specified directory (hint: Recursive method can be used)

functionDir_all ($path ) {        $handler=Opendir($path);  while(false!==($tmp=Readdir($handler))) {                 if(Is_dir( "$path/$tmp" )) {                        if($tmp=="." |$tmp=="..")Continue; Echo $tmp." <br>/n "; Dir_all ("$path/$tmp"); } Else {                        Echo $tmp." <br>/n "; }        }}

Write out two regular expressions that match the mailbox address and URL. Similar to the following:

// Email Address: [Email protected] URL address: http://(hint: Use standard regular expressions, that is, the regular handler function of the Preg_* class in PHP can parse the regular)// mailbox://w+ ([-+.] /w+) *@/w+ ([-.] /w+) */./w+ ([-.] /w+) */Url:/^http:////[/w]+/.[ /w]+[/s]*/

< Span style= "COLOR: #000000" > < Span style= "COLOR: #800080" > < Span style= "COLOR: #800080" > < Span style= "COLOR: #800080" > 
 
 
        

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Writes a sort algorithm, either bubbling or fast, assuming that the object being sorted is a dimension array. (Hint: You cannot use the system already has functions, please also carefully recall the basic knowledge previously learned)