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Add resistor-color-trio (#348)
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‎config.json‎

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"prerequisites": [],
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"difficulty": 1
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},
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{
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"slug": "resistor-color-trio",
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"name": "Resistor Color Trio",
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"uuid": "5d31468c-8e83-4901-8e08-0397f09e0462",
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"practices": [],
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"prerequisites": [],
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"difficulty": 1
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},
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{
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"slug": "leap",
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"name": "Leap",

‎exercises/practice/resistor-color-trio/.docs/instructions.md‎

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# Instructions
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If you want to build something using a Raspberry Pi, you'll probably use _resistors_.
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For this exercise, you need to know only three things about them:
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- Each resistor has a resistance value.
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- Resistors are small - so small in fact that if you printed the resistance value on them, it would be hard to read.
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To get around this problem, manufacturers print color-coded bands onto the resistors to denote their resistance values.
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- Each band acts as a digit of a number.
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For example, if they printed a brown band (value 1) followed by a green band (value 5), it would translate to the number 15.
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In this exercise, you are going to create a helpful program so that you don't have to remember the values of the bands.
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The program will take 3 colors as input, and outputs the correct value, in ohms.
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The color bands are encoded as follows:
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- black: 0
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- brown: 1
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- red: 2
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- orange: 3
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- yellow: 4
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- green: 5
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- blue: 6
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- violet: 7
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- grey: 8
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- white: 9
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In Resistor Color Duo you decoded the first two colors.
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For instance: orange-orange got the main value `33`.
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The third color stands for how many zeros need to be added to the main value.
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The main value plus the zeros gives us a value in ohms.
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For the exercise it doesn't matter what ohms really are.
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For example:
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- orange-orange-black would be 33 and no zeros, which becomes 33 ohms.
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- orange-orange-red would be 33 and 2 zeros, which becomes 3300 ohms.
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- orange-orange-orange would be 33 and 3 zeros, which becomes 33000 ohms.
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(If Math is your thing, you may want to think of the zeros as exponents of 10.
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If Math is not your thing, go with the zeros.
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It really is the same thing, just in plain English instead of Math lingo.)
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This exercise is about translating the colors into a label:
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> "... ohms"
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So an input of `"orange", "orange", "black"` should return:
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> "33 ohms"
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When we get to larger resistors, a [metric prefix][metric-prefix] is used to indicate a larger magnitude of ohms, such as "kiloohms".
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That is similar to saying "2 kilometers" instead of "2000 meters", or "2 kilograms" for "2000 grams".
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For example, an input of `"orange", "orange", "orange"` should return:
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> "33 kiloohms"
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[metric-prefix]: https://en.wikipedia.org/wiki/Metric_prefix

‎exercises/practice/resistor-color-trio/.meta/config.json‎

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{
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"authors": [
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"BNAndras"
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],
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"files": {
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"solution": [
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"zcl_resistor_color_trio.clas.abap"
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],
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"test": [
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"zcl_resistor_color_trio.clas.testclasses.abap"
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],
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"example": [
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".meta/zcl_resistor_color_trio.clas.abap"
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]
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},
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"blurb": "Convert color codes, as used on resistors, to a human-readable label.",
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"source": "Maud de Vries, Erik Schierboom",
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"source_url": "https://github.com/exercism/problem-specifications/issues/1549"
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}

‎exercises/practice/resistor-color-trio/.meta/tests.toml‎

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# This is an auto-generated file.
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#
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# Regenerating this file via `configlet sync` will:
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# - Recreate every `description` key/value pair
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# - Recreate every `reimplements` key/value pair, where they exist in problem-specifications
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# - Remove any `include = true` key/value pair (an omitted `include` key implies inclusion)
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# - Preserve any other key/value pair
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#
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# As user-added comments (using the # character) will be removed when this file
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# is regenerated, comments can be added via a `comment` key.
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[d6863355-15b7-40bb-abe0-bfb1a25512ed]
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description = "Orange and orange and black"
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[1224a3a9-8c8e-4032-843a-5224e04647d6]
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description = "Blue and grey and brown"
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[b8bda7dc-6b95-4539-abb2-2ad51d66a207]
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description = "Red and black and red"
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[5b1e74bc-d838-4eda-bbb3-eaba988e733b]
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description = "Green and brown and orange"
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[f5d37ef9-1919-4719-a90d-a33c5a6934c9]
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description = "Yellow and violet and yellow"
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[5f6404a7-5bb3-4283-877d-3d39bcc33854]
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description = "Blue and violet and blue"
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[7d3a6ab8-e40e-46c3-98b1-91639fff2344]
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description = "Minimum possible value"
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[ca0aa0ac-3825-42de-9f07-dac68cc580fd]
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description = "Maximum possible value"
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[0061a76c-903a-4714-8ce2-f26ce23b0e09]
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description = "First two colors make an invalid octal number"
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[30872c92-f567-4b69-a105-8455611c10c4]
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description = "Ignore extra colors"

‎exercises/practice/resistor-color-trio/.meta/zcl_resistor_color_trio.clas.abap‎

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CLASS zcl_resistor_color_trio DEFINITION
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PUBLIC
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FINAL
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CREATE PUBLIC.
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PUBLIC SECTION.
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METHODS label
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IMPORTING
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colors TYPE string_table
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RETURNING
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VALUE(result) TYPE string.
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PROTECTED SECTION.
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PRIVATE SECTION.
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METHODS color_code
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IMPORTING
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color TYPE string
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RETURNING
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VALUE(result) TYPE i.
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ENDCLASS.
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CLASS zcl_resistor_color_trio IMPLEMENTATION.
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METHOD label.
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DATA(color1) = colors[ 1 ].
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DATA(color2) = colors[ 2 ].
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DATA(color3) = colors[ 3 ].
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DATA(base_value) = color_code( color1 ) * 10 + color_code( color2 ).
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DATA(zeros) = color_code( color3 ).
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DATA(formatted_value) = base_value * ( 10 ** zeros ).
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DATA(unit) = CONV string( 'ohms' ).
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IF formatted_value >= 1000000000.
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formatted_value = formatted_value / 1000000000.
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unit = 'gigaohms'.
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ELSEIF formatted_value >= 1000000.
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formatted_value = formatted_value / 1000000.
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unit = 'megaohms'.
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ELSEIF formatted_value >= 1000.
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formatted_value = formatted_value / 1000.
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unit = 'kiloohms'.
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ENDIF.
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result = |{ formatted_value } { unit }|.
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ENDMETHOD.
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METHOD color_code.
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CASE color.
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WHEN 'black'.
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result = 0.
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WHEN 'brown'.
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result = 1.
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WHEN 'red'.
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result = 2.
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WHEN 'orange'.
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result = 3.
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WHEN 'yellow'.
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result = 4.
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WHEN 'green'.
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result = 5.
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WHEN 'blue'.
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result = 6.
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WHEN 'violet'.
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result = 7.
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WHEN 'grey'.
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result = 8.
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WHEN 'white'.
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result = 9.
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ENDCASE.
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ENDMETHOD.
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ENDCLASS.

‎exercises/practice/resistor-color-trio/package.devc.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<abapGit version="v1.0.0" serializer="LCL_OBJECT_DEVC" serializer_version="v1.0.0">
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<asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
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<asx:values>
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<DEVC>
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<CTEXT>Exercism: Resistor Color Trio</CTEXT>
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</DEVC>
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</asx:values>
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</asx:abap>
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</abapGit>

‎exercises/practice/resistor-color-trio/zcl_resistor_color_trio.clas.abap‎

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CLASS zcl_resistor_color_trio DEFINITION
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PUBLIC
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FINAL
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CREATE PUBLIC.
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PUBLIC SECTION.
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METHODS label
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IMPORTING
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colors TYPE string_table
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RETURNING
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VALUE(result) TYPE string.
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PROTECTED SECTION.
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PRIVATE SECTION.
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ENDCLASS.
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CLASS zcl_resistor_color_trio IMPLEMENTATION.
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METHOD label.
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"Implement solution
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ENDMETHOD.
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ENDCLASS.

‎exercises/practice/resistor-color-trio/zcl_resistor_color_trio.clas.testclasses.abap‎

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*"* use this source file for your ABAP unit test classes
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CLASS ltcl_resistor_color_trio DEFINITION FINAL FOR TESTING
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DURATION SHORT
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RISK LEVEL HARMLESS.
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PRIVATE SECTION.
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DATA cut TYPE REF TO zcl_resistor_color_trio.
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METHODS setup.
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METHODS:
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test_orange_and_orange_black FOR TESTING,
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test_blue_and_grey_brown FOR TESTING,
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test_red_and_black_red FOR TESTING,
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test_green_and_brown_orange FOR TESTING,
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test_yellow_and_violet_yellow FOR TESTING,
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test_blue_and_violet_blue FOR TESTING,
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test_minimum_possible_value FOR TESTING,
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test_maximum_possible_value FOR TESTING,
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test_invalid_octal FOR TESTING,
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test_ignore_extra_colors FOR TESTING.
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ENDCLASS.
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CLASS ltcl_resistor_color_trio IMPLEMENTATION.
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METHOD setup.
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cut = NEW zcl_resistor_color_trio( ).
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ENDMETHOD.
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METHOD test_orange_and_orange_black.
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DATA(input_colors) = VALUE string_table( ( `orange` ) ( `orange` ) ( `black` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '33 ohms' ).
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ENDMETHOD.
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METHOD test_blue_and_grey_brown.
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DATA(input_colors) = VALUE string_table( ( `blue` ) ( `grey` ) ( `brown` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '680 ohms' ).
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ENDMETHOD.
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METHOD test_red_and_black_red.
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DATA(input_colors) = VALUE string_table( ( `red` ) ( `black` ) ( `red` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '2 kiloohms' ).
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ENDMETHOD.
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METHOD test_green_and_brown_orange.
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DATA(input_colors) = VALUE string_table( ( `green` ) ( `brown` ) ( `orange` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '51 kiloohms' ).
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ENDMETHOD.
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METHOD test_yellow_and_violet_yellow.
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DATA(input_colors) = VALUE string_table( ( `yellow` ) ( `violet` ) ( `yellow` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '470 kiloohms' ).
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ENDMETHOD.
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METHOD test_blue_and_violet_blue.
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DATA(input_colors) = VALUE string_table( ( `blue` ) ( `violet` ) ( `blue` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '67 megaohms' ).
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ENDMETHOD.
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METHOD test_minimum_possible_value.
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DATA(input_colors) = VALUE string_table( ( `black` ) ( `black` ) ( `black` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '0 ohms' ).
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ENDMETHOD.
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METHOD test_maximum_possible_value.
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DATA(input_colors) = VALUE string_table( ( `white` ) ( `white` ) ( `white` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '99 gigaohms' ).
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ENDMETHOD.
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METHOD test_invalid_octal.
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DATA(input_colors) = VALUE string_table( ( `black` ) ( `grey` ) ( `black` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '8 ohms' ).
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ENDMETHOD.
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METHOD test_ignore_extra_colors.
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DATA(input_colors) = VALUE string_table( ( `blue` ) ( `green` ) ( `yellow` ) ( `orange` ) ).
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cl_abap_unit_assert=>assert_equals(
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act = cut->label( input_colors )
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exp = '650 kiloohms' ).
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ENDMETHOD.
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ENDCLASS.

‎exercises/practice/resistor-color-trio/zcl_resistor_color_trio.clas.xml‎

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<?xml version="1.0" encoding="utf-8"?>
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<abapGit version="v1.0.0" serializer="LCL_OBJECT_CLAS" serializer_version="v1.0.0">
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<asx:abap xmlns:asx="http://www.sap.com/abapxml" version="1.0">
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<asx:values>
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<VSEOCLASS>
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<CLSNAME>ZCL_RESISTOR_COLOR_TRIO</CLSNAME>
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<LANGU>E</LANGU>
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<DESCRIPT>Exercism: Resistor Color Trio</DESCRIPT>
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<STATE>1</STATE>
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<CLSCCINCL>X</CLSCCINCL>
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<FIXPT>X</FIXPT>
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<UNICODE>X</UNICODE>
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<WITH_UNIT_TESTS>X</WITH_UNIT_TESTS>
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</VSEOCLASS>
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</asx:values>
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</asx:abap>
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</abapGit>

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