public static function canResize($imagePath)
{
$pictureInfo = getimagesize($imagePath);
$memoryNeeded = round(($pictureInfo[0] * $pictureInfo[1] * $pictureInfo['bits'] * $pictureInfo['channels'] / 8 + Math::power(2, 16)) * 1.65);
$memoryLimit = str_replace('M', '', Config::getMemoryLimit()) * Math::power(2, 20);
return $memoryLimit > $memoryNeeded + memory_get_usage(TRUE) ? TRUE : FALSE;
}
public function multiply($a, $b)
{
$times = Math::absSystem($b);
for ($i = 0; $i < $times; $i++) {
$a += $a;
}
return $b > 0 ? $a : -$a;
}
public static function fisherYates($data)
{
$size = count($data);
foreach ($data as $k => $v) {
$index = Math::randomInterval(0, $size);
self::swap($data, $k, $index);
}
return $data;
}
public static function newId()
{
usleep(Math::randomInterval(2, 4) * 100);
for ($i = 0; $i < Math::randomInterval(2, 5); $i++) {
usleep(100);
session_regenerate_id(TRUE);
usleep(100);
}
usleep(Math::randomInterval(2, 4) * 100);
return self::id();
}
public final function getDepth(AbstractBinaryTree $root = NULL)
{
if ($root == NULL) {
return -1;
}
if ($root instanceof TernaryTree) {
return 1 + Math::max($this->getDepth($root->left), $this->getDepth($root->middle), $this->getDepth($root->right));
} else {
return 1 + Math::max($this->getDepth($root->left), $this->getDepth($root->right));
}
}
public function __construct($width = 400, $height = 200)
{
parent::__construct();
if (!Validator::isNumber($width) || Validator::isNumber($height)) {
throw new IllegalArgumentException();
}
$this->captcha = new Images($width, $height);
$this->captcha->setBackgroundColor(new Color(0, 0, 0));
$this->captcha->setTextColor(new Color(255, 255, 255));
$string = new StringW(Hash::r());
$this->text = $string->subString(0, Math::randomInterval(6, 8));
$this->captcha->setText(Math::randomInterval(2, 6), new Point(0, 0), $string, FALSE);
}
public function index()
{
$ipString = '2001:4cfb:bfc4:0000:0000:0000:0123:4aab';
$myIP = new IPv6("2001:4cfb:0000:0000:0000:0000:0123:4aab", FALSE);
//$myIP = new IPv4( '1.2.3.4', TRUE );
$myIP = new IPvU($ipString, FALSE);
//$myIP = new IPvU( "1.2.3.4", FALSE);
echo ' IPString=' . $ipString . '<br>';
echo 'MY IP=' . $myIP->getNiceIP() . '<br>';
$z = new StringW("aookkooa");
echo 'Text:<b>' . $z . '</b><br>Longest palindrome using Manachers algorithm: <b>' . $z->getLongestPalindromeManacher() . '</b>';
$this->getDB()->query('SELECT user_name FROM users LIMIT 50;', []);
$res = $this->getDB()->fetchAll();
$this->getDB()->freeStatement();
echo 'ack2:' . Math::ackermannLimitedRecoursion(3, 88);
//echo 'ack:' . Math::ackermann( 3, 17 );
return $res;
}
public static function solveQuadraticEquation($a, $b, $c)
{
if ($b == 0 && $c <= 0) {
$c = Math::absSystem($c);
$c /= $a;
$cSqrt = Math::squareRoot($c);
return [0 => $cSqrt, 1 => -$cSqrt];
}
$d = self::discriminant2($a, $b, $c);
if ($d < 0) {
return NULL;
} else {
if ($d == 0 || $a == 0) {
return [0 => -$b / 2 * $a, 1 => NULL];
} else {
return [0 => -$b + Math::squareRoot($d) / (2 * $a), 1 => -$b - Math::squareRoot($d) / (2 * $a)];
}
}
}
public function numberPower($number)
{
if (!Validator::isNumber($number)) {
throw new IllegalArgumentException();
}
$newMatrix = [];
for ($i = 0; $i < $this->getMatrixSizeA(); $i++) {
for ($j = 0; $j < $this->getMatrixSizeB(); $j++) {
$newMatrix[$i][$j] = Math::power($this->getMatrix()[$i][$j], $number);
}
}
return new Matrix($newMatrix);
}
public function getRedHexa()
{
return Math::decimalToHexadecimal($this->red);
}
public static function rNum()
{
return Math::randomInterval(0, Math::randomInterval(1, Math::randomInterval(2, 1000)));
}
protected function sort(AbstractSort $sort)
{
$maxDepth = Math::logarithmDecade(count($this->originalData)) * 2;
$this->sortedData = $this->introsort($this->originalData, $maxDepth);
}
print_r($arrray); $ms = new \QW\FW\DataWorking\Sort\MergeSort($arrray); echo '<br><br>UNSORTED:::<br><br>'; print_r($ms->getOriginalArray()); echo '<br><br>SORTED BY MERGE SORT:::<br><br>'; print_r($ms->getSortedArray()); /* echo 'try Ackermann function:'; echo Math::ackermann( 2, 5 ); echo '<br>Finding Ackermnann inv:<br>'; Math::ackermannInv( 125 ) ->printMatrix(); */ echo '<br>'; var_dump(Math::randomBoolean()); $root = new TernaryTree(new BinaryTree(NULL, NULL, 1), new BinaryTree(NULL, NULL, 2), new BinaryTree(NULL, NULL, 3), 4, FALSE); echo 'Z------'; print_r($root->iteratorEulerTour()->getFinalData()); $root = NULL; $root3 = new TernaryTree(new TernaryTree(NULL, NULL, NULL, 2), new TernaryTree(NULL, NULL, NULL, 3), new TernaryTree(new TernaryTree(NULL, NULL, NULL, 5), new TernaryTree(NULL, NULL, NULL, 6), NULL, 4), 1); echo 'Euler TERNARY:<br>'; print_r($root3->iteratorEulerTour()->getFinalData()); $root3 = NULL; $root4 = new \QW\FW\DataStructures\Trees\Nary\NaryTree([new \QW\FW\DataStructures\Trees\Nary\NaryTree([], 3), new \QW\FW\DataStructures\Trees\Nary\NaryTree([], 3), new \QW\FW\DataStructures\Trees\Nary\NaryTree([new \QW\FW\DataStructures\Trees\Nary\NaryTree([], 5), new \QW\FW\DataStructures\Trees\Nary\NaryTree([], 6)], 4)], 1); $root4 = NULL; ?>
public static function randomBoolean()
{
return new Boolean(Math::randomBoolean());
}
public static function sieveOfEratosthenes($number)
{
$sieve = [];
$sieve[0] = $sieve[1] = TRUE;
$squareRoot = Math::squareRoot($number);
for ($i = 2; $i <= $squareRoot; $i++) {
if ($sieve[$i] == TRUE) {
continue;
}
for ($j = 2 * $i; $j < $number; $j += $i) {
$sieve[$j] = TRUE;
}
}
return $sieve;
}
public function subString($start, $end = NULL)
{
return new StringW(mb_substr($this->string, Math::max(0, $start), Math::max(0, Math::min(Math::max(0, $end), $this->getLength() - 1)), self::UTF8));
}
public static function getFibonacci($x)
{
static $gro5;
$gro5 = Math::squareRoot(5);
$fi = (1 + $gro5) / 2;
return Math::power($fi, $x) / $gro5 - Math::power(1 - $fi, $x) / $gro5;
}
public function sin()
{
return new MathComplexNumber(Math::sin($this->real) * Math::cosH($this->imaginary), Math::cos($this->real) * Math::sinH($this->imaginary));
}
public function getDepth(AbstractBinaryTree $root = NULL)
{
if ($root == NULL) {
return -1;
}
return Math::max($this->getDepth($root->left), $this->getDepth($root->right)) + 1;
}