/
sort_algorithms.php
218 lines (168 loc) · 3.5 KB
/
sort_algorithms.php
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<?php
$array_to_sort = [27,1324,12,354,321,480,660,343,123,43,13,3,13,1,32];
///////////////
//Bubble Sort//
///////////////
function bubble_sort($array_to_sort = '')
{
if ((is_array($array_to_sort) && count($array_to_sort) > 1)){
for ($i = 0; $i < count($array_to_sort) ; $i++) {
for ($j = $i; $j < count($array_to_sort) ; $j++) {
if ($array_to_sort[$i] > $array_to_sort[$j]){
$array_to_sort[$i] = $array_to_sort[$i] + $array_to_sort[$j];
$array_to_sort[$j] = $array_to_sort[$i] - $array_to_sort[$j];
$array_to_sort[$i] = $array_to_sort[$i] - $array_to_sort[$j];
}
}
}
return $array_to_sort;
}else{
return "Pass an Valid input (only array() with size greater than 2)";
}
}
r_print(bubble_sort($array_to_sort));
//////////////////
//Insertion Sort//
//////////////////
function insertion_sort($array_to_sort='')
{
$s=[];
for($i=0;$i< count($array_to_sort);$i++){
if(count($s)==0){
array_push($s,$array_to_sort[$i]);
continue;
}
else{
$flag=false;
for($j=count($s)-1;$j>=0;$j--){
if($array_to_sort[$i]<$s[$j]){
$temp=$s[$j];
$s[$j]=$array_to_sort[$i];
$s[$j+1]=$temp;
$flag=true;
}
else{
if(!$flag){
array_push($s,$array_to_sort[$i]);
break;
}
}
}
}
}
}
r_print(insertion_sort($array_to_sort));
//////////////
//Merge Sort//
//////////////
function merge_sort($array_to_sort = '')
{
if(count($array_to_sort) == 1){
return $array_to_sort;
}else{
$sp = count($array_to_sort)/2;
$sp = floor($sp);
$left = array_slice($array_to_sort,0,$sp);
$right = array_slice($array_to_sort,$sp);
$left = ms($left);
$right = ms($right);
$result = merge($left,$right);
return $result;
}
}
function merge($left,$right)
{
$ra=[];
$i = 0;
$j = 0;
$left_put = false;
$right_put = false;
while(true){
if($i == count($left)){
$right_put = true;
break;
}
if($j == count($right)){
$left_put = true;
break;
}
if($left[$i]>$right[$j]){
array_push($ra,$right[$j]);
$j++;
}
else{
array_push($ra,$left[$i]);
$i++;
}
}
if($left_put){
for(;$i < count($left);$i++){
array_push($ra,$left[$i]);
}
}
if($right_put){
for(;$j < count($right);$j++){
array_push($ra,$right[$j]);
}
}
return $ra;
}
r_print(merge_sort($array_to_sort));
///////////////
//Quick Sort//
///////////////
function qs($a, $low, $high)
{
if($low == $high || $low > $high) {
return $a;
}else{
$flag1 = false;
$flag2 = false;
$pivot = $a[$low];
for ($i = $low + 1 , $j = $high;;) {
if($j<$i)
break;
if($flag1 == true && $flag2 == true ) {
$temp = $a[$i];
$a[$i] = $a[$j];
$a[$j] = $temp;
$i++;
$j--;
$flag1 = false;
$flag2 = false;
}else{
if ($a[$i] < $pivot && $flag1 == false) {
$i++;
}else{
$flag1 = true;
}
if ($a[$j] > $pivot && $flag2 == false) {
$j--;
}else{
$flag2 = true;
}
}
}
$temp = $a[$low];
$a[$low] = $a[$i-1];
$a[$i-1] = $temp;
$a = qs($a, $low, $i-1);
$a = qs($a, $i, $high);
return $a;
}
}
r_print($array_to_sort);
////////////////
//Pretty Print//
////////////////
function r_print($data = '')
{
if (empty($data)) {
return '';
}else{
echo "<pre>";
print_r($data);
echo "</pre>";
}
}
?>