Решение 6 задачи

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fgh's picture
Submitted by fgh on Fri, 06/19/2020 - 14:27

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Решение задач


<?php

class Trapeci {
  public $x1;
  public $x2;
  public $x3;
  public $x4;
  public $y1;
  public $y2;
  public $y3;
  public $y4;
  public $a;
  public $b;
  public $DA;
  public $BC;
  public $AB;
  public $CD;
  public $Dlina;
  public $perimetr;
  public $s;
  function __construct ($x1,$y1,$x2,$y2,$x3,$y3,$x4,$y4) {
    $this->  x1 = $x1 ;
    $this->  y1 = $y1 ;
    $this->  x2 = $x2 ;
    $this->  y2 = $y2 ;
    $this->  x3 = $x3 ;
    $this->  y3 = $y3 ;
    $this->  x4 = $x4 ;
    $this->  y4 = $y4 ;
    $this-> a= sqrt(pow( $this-> x4 - $this-> x3,2) + pow($this-> y4 - $this-> y3,2));
    // echo "a :", $this-> a;
    $this-> b= sqrt(pow( $this-> y2 - $this-> y1,2) + pow($this-> x2 - $this-> x1,2));
    // echo " b :", $this-> b,"<BR>";
    $this-> DA = sqrt(pow($this-> x4 - $this-> x1,2) + pow($this-> y4 - $this-> y1,2));
    $this-> BC = sqrt(pow($this-> x3 - $this-> x1,2) + pow($this-> y3 - $this-> y1,2));
    $this-> AB = sqrt(pow($this-> x2 - $this-> x1,2) + pow($this-> y2 - $this-> y1,2));
    $this-> CD = sqrt(pow($this-> x4 - $this-> x3,2) + pow($this-> y4 - $this-> y3,2));
    $this-> perimetr = $this-> DA + $this-> BC + $this-> AB + $this-> CD;
    $this-> s = (($this-> DA+$this-> BC)/2)* sqrt( pow($this-> AB,2)- pow(($this-> DA-$this-> BC)/2,2) ) ;
  }
  function TestRavnobochnost () {
    if ( $this-> a == $this-> b ) {
      echo "<BR> Ravnobochnaya <BR> ";
    }
    else {
      echo " <BR> NeRavnobochnaya <BR>  ";
     }
   }
  function Dlina () {  
    echo " DA: ", $this-> DA,"<BR>" ;
    echo "BC: ",$this-> BC,"<BR>";  
    echo "AB: ",$this-> AB,"<BR>" ;
    echo " CD: ", $this-> CD,"<BR>";
  }
  function Perimetr () {
    echo " Perimetr: ", $this-> perimetr,"<BR>";
}
  function Ploshad () {
    echo " Ploshad: ", $this-> s, "<BR>";
  }
  function __destruct () {
    $this->  x1;
    $this->  y1 ;
    $this->  x2 ;
    $this->  y2;
    $this->  x3 ;
    $this->  y3;
    $this->  x4 ;
    $this->  y4;
    $this-> s;
    $this-> perimetr;
    $this-> Dlina;
  }
  }

  $N=3;
  for ( $i = 0; $i < $N; $i++) {
    $objs[$i] = new Trapeci (rand(5,20),rand(5,20),rand(5,20),rand(5,20),rand(5,20),rand(5,20),rand(5,20),rand(5,20));  
$objs[$i]-> TestRavnobochnost ();
$objs[$i]-> Dlina ();
$objs[$i]-> Perimetr ();
$objs[$i]-> Ploshad ();
$summaploshad += $objs[$i]-> s;
  }  
   $srefnyaploshad = $summaploshad/$N;
   $k=0;
   for ( $i = 0; $i < $N; $i++) {
     if ($objs[$i]-> s > $srefnyaploshad) {
     $k =$k +1;
    }
   }
    echo "<BR> <BR> <BR> Summa  ploshad:  ", $summaploshad, "<BR>";
    echo $summaploshad, "/",$N, "  Srednya ploshad: ", $srefnyaploshad, "<BR>" ;
    echo "Kolichtstvo trapecii ploshad bolshe srednei: ", $k;
?>
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math2

Fri, 06/19/2020 - 16:44

Приветствую!
Перепишите это частично, применяя английскую терминологию и используя класс Point для точки:

class Point
{
    public $x;
    public $y;

    function __construct($x, $y)
    {
        $this->x = $x;
        $this->y = $y;
    }

    /**
     * Distance to another point
     */
    function distance(Point $point)
    {
        
    }
}

И далее перепишите Trapeci, используя черыре точки:

class Trapezoid
{
    public $A;
    public $B;
    public $C;
    public $D;

    /**
     * Равнобочность
     */
    function isEquilateral(): bool
    {

    }

    function getPerimeter()
    {
        
    }

    function getSquare()
    {
        
    }
}
fgh's picture

fgh

Sun, 06/21/2020 - 22:50 

<?php
class Point
 
{
    public $x;
    public $y;
    function __construct($x, $y)
 
    {
        $this->x = $x;
        $this->y = $y;
    }
    function distance(Point $point)
    {
        return sqrt(pow($this-> x -  $point-> x,2 )+pow( $this-> y  - $point-> y, 2));
    }
}
class Trapezoid
 
{
    public $AB;
    public $BC;
    public $CD;
    public $DA;
    public $h;
    public $perimetr;
    public $s;
    public function __construct($x1, $y1, $x2, $y2, $x3, $y3, $x4, $y4)
    {
        $A = new Point($x1, $y1);
        $B = new Point($x2, $y2);
        $C = new Point($x3, $y3);
        $D = new Point($x4, $y4);
        $this->AB = $A->distance($B);
        $this->BC = $B->distance($C);
        $this->CD = $C->distance($D);
        $this->DA = $D->distance($A);
        $this->h = sqrt(pow($this->AB,2)-pow(($this->DA - $this->BC )/2,2));
    }
    function isEquilateral() : bool
    {
        return $this->AB == $this->CD;
    }
    function getSquare()
    {
        $this->s = ($this->BC+$this->DA) / 2 * $this->h;
        return $this->s;
    }
    function getPerimeter()
    {
        $this->perimetr = $this->AB + $this->BC + $this->CD + $this->DA;
        return $this->perimetr;
    }
}
$n = 4;
$sumSquare = 0;
$averSquare = 0;
for ($i = 0; $i < $n; $i++)
{
$trapecia[$i] = new Trapezoid(rand(5, 10), rand(5, 10), rand(5, 10), rand(5, 10), rand(5, 10), rand(5, 10), rand(5, 10), rand(5, 10));
    echo "Perimeter" .$i . "trapeziod : " . $trapecia[$i]->getPerimeter() . "\n";
    echo "Square" .$i . "trapeziod : " . $trapecia[$i]->getSquare() . "\n";
    if ($trapecia[$i]->isEquilateral())
    {
        echo "trapezoid" . $i . "is equilateral \n";
    }
    else {
        echo "trapezoid" . $i . "is UNequilateral \n";
    }
    $sumSquare += $trapecia[$i]->getSquare();
}
$averSquare = $sumSquare / $n;
$counter = 0;
for ($i = 0 ; $i < $n; $i++)
{
    if($trapecia[$i]->getSquare() > $averSquare)
    {
        $counter++;
    }
}
echo "Average square: " . $averSquare . "\n";
echo "Quantity of trapezoid which square more then Average square: " . $counter . "\n";