Just PHP FUN 152.

encodeResistorColors.php

<?php
# https://www.codewars.com/kata/5855777bb45c01bada0002ac Resistor Color Codes, Part 2.
function encodeResistorColors($ohmsString) {
      $hash = [
      0 => "black",
      1 => "brown",
      2 => "red",
      3 => "orange",
      4 => "yellow",
      5 => "green",
      6 => "blue",
      7 => "violet",
      8 => "gray",
      9 => "white",
      "k" => 3,
      "M" => 6,
      "" => 0,
    ];
    
    preg_match('/^(\d+)((\.)(\d+))?(\w)?/',$ohmsString,$matches);
    var_dump($matches);
    $digit = $matches[1];
    $text = $matches[5];
    $digit2 = $matches[4];
    $mt = $hash[$text];
    
    if(strlen($digit) >= 2){
      $mul = strlen($digit) - 2 + $mt;
      $first = $hash[intval($digit[0])];
      $second = $hash[intval($digit[1])];
      $third = $hash[$mul];
      return "$first $second $third gold";
    }
    if(1 == strlen($digit) && "" == $digit2){
      $first = $hash[intval($digit[0])];
      $second = $hash[0];
      $third = $hash[$mt-1];
      return "$first $second $third gold";
    }
    if(1 == strlen($digit) && "" != $digit2){
      $first = $hash[intval($digit[0])];
      $second = $hash[intval($digit2[0])];;
      $third = $hash[$mt-1];
      return "$first $second $third gold";
    }
}

class DefaultArgumentsTest extends TestCase {
  public function testSomeCommonResistorValues() {
    $this->assertEquals("brown black black gold", encodeResistorColors("10 ohms"));
    $this->assertEquals("yellow violet black gold", encodeResistorColors("47 ohms"));
    $this->assertEquals("brown black brown gold", encodeResistorColors("100 ohms"));
    $this->assertEquals("red red brown gold", encodeResistorColors("220 ohms"));
    $this->assertEquals("orange orange brown gold", encodeResistorColors("330 ohms"));
    $this->assertEquals("yellow violet brown gold", encodeResistorColors("470 ohms"));
    $this->assertEquals("blue gray brown gold", encodeResistorColors("680 ohms"));
    /**
    $this->assertEquals("brown black red gold", encodeResistorColors("1k ohms"));
    $this->assertEquals("yellow violet red gold", encodeResistorColors("4.7k ohms"));
    $this->assertEquals("brown black orange gold", encodeResistorColors("10k ohms"));
    $this->assertEquals("red red orange gold", encodeResistorColors("22k ohms"));
    $this->assertEquals("yellow violet orange gold", encodeResistorColors("47k ohms"));
    $this->assertEquals("brown black yellow gold", encodeResistorColors("100k ohms"));
    $this->assertEquals("orange orange yellow gold", encodeResistorColors("330k ohms"));
    $this->assertEquals("brown black green gold", encodeResistorColors("1M ohms"));
    $this->assertEquals("red black green gold", encodeResistorColors("2M ohms"));*/
  }
}

just_php_fun_152.md

Just PHP FUN 152.

• https://www.codewars.com/kata/5855777bb45c01bada0002ac Resistor Color Codes, Part 2.

Started at 17.11.2020 22:10 Tuesday.
Finished at 20.11.2020 22:22 Friday.