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temperature conversions (#169)
* temperature conversions * perfect number * added unit tests and ran phpcs * unit test * fixed style issue in ConversionsTest.php * fixed comments
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‎Conversions/TemperatureConversions.php

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<?php
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/**
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* This function converts the submitted
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* temperature (Celsius) and converts it into
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* Fahrenheit.
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*
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* @author Marco https://github.com/MaarcooC
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* @param float $celsius
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* @throws \Exception
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* @return float
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*/
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function CelsiusToFahrenheit($celsius)
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{
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if (!is_numeric($celsius)) {
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throw new \Exception("Temperature (Celsius) must be a number");
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}
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return round(($celsius * 9 / 5) + 32, 1);
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}
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/**
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* This function converts the submitted
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* temperature (Fahrenheit) and converts it into
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* Celsius.
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*
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* @author Marco https://github.com/MaarcooC
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* @param float $fahrenheit
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* @throws \Exception
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* @return float
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*/
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function FahrenheitToCelsius($fahrenheit)
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{
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if (!is_numeric($fahrenheit)) {
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throw new \Exception("Temperature (Fahrenheit) must be a number");
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}
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return round(($fahrenheit - 32) * 5 / 9, 1);
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}
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/**
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* This function converts the submitted
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* temperature (Celsius) and converts it into
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* Kelvin.
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*
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* @author Marco https://github.com/MaarcooC
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* @param float $celsius
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* @throws \Exception
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* @return float
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*/
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function CelsiusToKelvin($celsius)
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{
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if (!is_numeric($celsius)) {
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throw new \Exception("Temperature (Celsius) must be a number");
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}
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return round(($celsius + 273.15), 2);
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}
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/**
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* This function converts the submitted
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* temperature (Kelvin) and converts it into
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* Celsius.
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*
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* @author Marco https://github.com/MaarcooC
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* @param float $kelvin
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* @throws \Exception
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* @return float
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*/
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function KelvinToCelsius($kelvin)
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{
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if (!is_numeric($kelvin)) {
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throw new \Exception("Temperature (Kelvin) must be a number");
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}
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return round(($kelvin - 273.15), 2);
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}
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/**
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* This function converts the submitted
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* temperature (Kelvin) and converts it into
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* Fahrenheit.
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*
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* @author Marco https://github.com/MaarcooC
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* @param float $kelvin
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* @throws \Exception
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* @return float
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*/
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function KelvinToFahrenheit($kelvin)
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{
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if (!is_numeric($kelvin)) {
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throw new \Exception("Temperature (Kelvin) must be a number");
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}
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return round(($kelvin - 273.15) * 1.8 + 32, 2);
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}
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/**
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* This function converts the submitted
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* temperature (Fahrenheit) and converts it into
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* kelvin.
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*
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* @author Marco https://github.com/MaarcooC
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* @param float $fahrenheit
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* @throws \Exception
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* @return float
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*/
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function FahrenheitToKelvin($fahrenheit)
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{
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if (!is_numeric($fahrenheit)) {
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throw new \Exception("Temperature (Fahrenheit) must be a number");
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}
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return round(($fahrenheit - 32) * 5 / 9 + 273.15, 2);
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}

‎DIRECTORY.md

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* [Hexadecimaltodecimal](./Conversions/HexadecimalToDecimal.php)
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* [Octaltodecimal](./Conversions/OctalToDecimal.php)
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* [Speedconversion](./Conversions/SpeedConversion.php)
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* [Temperatureconversions](./Conversions/TemperatureConversions.php)
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## Datastructures
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* Avltree
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* [Median](./Maths/Median.php)
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* [Mode](./Maths/Mode.php)
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* [Neonnumber](./Maths/NeonNumber.php)
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* [Perfectnumber](./Maths/PerfectNumber.php)
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* [Perfectsquare](./Maths/PerfectSquare.php)
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* Projecteuler
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* [Problem1](./Maths/ProjectEuler/Problem1.php)

‎Maths/PerfectNumber.php

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<?php
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/**
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This function returns true
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* if the submitted number is perfect,
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* false if it is not.
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*
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* A perfect number is a positive integer that is
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* equal to the sum of its positive proper
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* divisors, excluding the number itself.
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*
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* About perfect numbers: https://en.wikipedia.org/wiki/Perfect_number
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*
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* @author Marco https://github.com/MaarcooC
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* @param int $number
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* @return bool
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*/
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function perfect_number($number)
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{
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/*Input validation*/
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if (!is_int($number) || $number <= 1) {
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/*Return false for non-integer or non-positive numbers*/
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return false;
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}
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$divisorsSum = 1; /*1 is a common divisor for every number*/
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/*Check for divisors up to the square root of the number*/
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for ($i = 2; $i * $i <= $number; $i++) {
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if ($number % $i == 0) {
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$divisorsSum += $i; /*add i to the sum of divisors*/
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if ($i != $number / $i) { /*add the complement divisor*/
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$divisorsSum += $number / $i;
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}
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}
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}
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return $divisorsSum == $number;
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}

‎tests/Conversions/ConversionsTest.php

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require_once __DIR__ . '/../../Conversions/OctalToDecimal.php';
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require_once __DIR__ . '/../../Conversions/HexadecimalToDecimal.php';
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require_once __DIR__ . '/../../Conversions/SpeedConversion.php';
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require_once __DIR__ . '/../../Conversions/TemperatureConversions.php';
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class ConversionsTest extends TestCase
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{
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$this->expectException(\Exception::class);
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convertSpeed(1, 'km/h', 'miles');
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}
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public function testCelsiusToFahrenheit()
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{
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$this->assertEquals(32.0, CelsiusToFahrenheit(0));
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$this->assertEquals(212.0, CelsiusToFahrenheit(100));
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$this->assertEquals(98.6, CelsiusToFahrenheit(37));
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$this->expectException(\Exception::class);
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$this->expectExceptionMessage('Temperature (Celsius) must be a number');
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CelsiusToFahrenheit("non-numeric");
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}
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public function testFahrenheitToCelsius()
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{
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$this->assertEquals(0.0, FahrenheitToCelsius(32));
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$this->assertEquals(100.0, FahrenheitToCelsius(212));
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$this->assertEquals(37.0, FahrenheitToCelsius(98.6));
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$this->expectException(\Exception::class);
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$this->expectExceptionMessage('Temperature (Fahrenheit) must be a number');
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FahrenheitToCelsius("non-numeric");
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}
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public function testCelsiusToKelvin()
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{
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$this->assertEquals(273.15, CelsiusToKelvin(0));
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$this->assertEquals(373.15, CelsiusToKelvin(100));
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$this->expectException(\Exception::class);
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$this->expectExceptionMessage('Temperature (Celsius) must be a number');
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CelsiusToKelvin("non-numeric");
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}
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public function testKelvinToCelsius()
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{
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$this->assertEquals(0.0, KelvinToCelsius(273.15));
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$this->assertEquals(100.0, KelvinToCelsius(373.15));
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$this->expectException(\Exception::class);
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$this->expectExceptionMessage('Temperature (Kelvin) must be a number');
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KelvinToCelsius("non-numeric");
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}
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public function testKelvinToFahrenheit()
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{
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$this->assertEquals(32.0, KelvinToFahrenheit(273.15));
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$this->assertEquals(212.0, KelvinToFahrenheit(373.15));
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$this->expectException(\Exception::class);
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$this->expectExceptionMessage('Temperature (Kelvin) must be a number');
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KelvinToFahrenheit("non-numeric");
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}
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public function testFahrenheitToKelvin()
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{
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$this->assertEquals(273.15, FahrenheitToKelvin(32));
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$this->assertEquals(373.15, FahrenheitToKelvin(212));
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$this->expectException(\Exception::class);
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$this->expectExceptionMessage('Temperature (Fahrenheit) must be a number');
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FahrenheitToKelvin("non-numeric");
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}
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}

‎tests/Maths/MathsTest.php

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require_once __DIR__ . '/../../Maths/Mode.php';
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require_once __DIR__ . '/../../Maths/FastInverseSquareRoot.php';
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require_once __DIR__ . '/../../Maths/BaseX.php';
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require_once __DIR__ . '/../../Maths/PerfectNumber.php';
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class MathsTest extends TestCase
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{
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$this->assertEquals(3, gcd(9, 12));
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}
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public function testPerfectNumber()
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{
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$this->assertTrue(perfect_number(6));
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$this->assertTrue(perfect_number(28));
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$this->assertTrue(perfect_number(496));
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$this->assertFalse(perfect_number(10));
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$this->assertFalse(perfect_number(15));
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$this->assertFalse(perfect_number(-6));
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$this->assertFalse(perfect_number(0));
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$this->assertFalse(perfect_number(1));
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$this->assertFalse(perfect_number(2.5));
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$this->assertFalse(perfect_number("string"));
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}
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public function testFastInverseSquareRoot()
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{
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$this->assertEqualsWithDelta(0.31568579235273, fastInvSqrt(10), 0.00001);

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